diff --git a/routers/api/v1/admin/user/__init__.py b/routers/api/v1/admin/user/__init__.py
index 8f20806..f26df50 100644
--- a/routers/api/v1/admin/user/__init__.py
+++ b/routers/api/v1/admin/user/__init__.py
@@ -12,6 +12,7 @@ from sqlmodels import (
     Group, Object, ObjectType, Setting, SettingsType,
     BatchDeleteRequest,
 )
+from sqlmodels.auth_identity import AuthIdentity, AuthProviderType
 from sqlmodels.user import (
     UserAdminCreateRequest, UserAdminUpdateRequest, UserCalibrateResponse, UserStatus,
 )
@@ -83,13 +84,26 @@ async def router_admin_create_user(
     """
     创建一个新的用户，设置邮箱、密码、用户组等信息。
 
+    管理员创建用户时，若提供了 email + password，
+    会同时创建 AuthIdentity(provider=email_password)。
+
     :param session: 数据库会话
     :param request: 创建用户请求 DTO
     :return: 创建结果
     """
-    existing_user = await User.get(session, User.email == request.email)
-    if existing_user:
-        raise HTTPException(status_code=409, detail="该邮箱已被注册")
+    # 如果提供了邮箱，检查唯一性（User 表和 AuthIdentity 表）
+    if request.email:
+        existing_user = await User.get(session, User.email == request.email)
+        if existing_user:
+            raise HTTPException(status_code=409, detail="该邮箱已被注册")
+
+        existing_identity = await AuthIdentity.get(
+            session,
+            (AuthIdentity.provider == AuthProviderType.EMAIL_PASSWORD)
+            & (AuthIdentity.identifier == request.email),
+        )
+        if existing_identity:
+            raise HTTPException(status_code=409, detail="该邮箱已被绑定")
 
     # 验证用户组存在
     group = await Group.get(session, Group.id == request.group_id)
@@ -98,12 +112,24 @@ async def router_admin_create_user(
 
     user = User(
         email=request.email,
-        password=Password.hash(request.password),
         nickname=request.nickname,
         group_id=request.group_id,
         status=request.status,
     )
     user = await user.save(session)
+
+    # 如果提供了邮箱和密码，创建邮箱密码认证身份
+    if request.email and request.password:
+        identity = AuthIdentity(
+            provider=AuthProviderType.EMAIL_PASSWORD,
+            identifier=request.email,
+            credential=Password.hash(request.password),
+            is_primary=True,
+            is_verified=True,
+            user_id=user.id,
+        )
+        await identity.save(session)
+
     return user.to_public()
 
 
@@ -148,17 +174,7 @@ async def router_admin_update_user(
         if not group:
             raise HTTPException(status_code=400, detail="目标用户组不存在")
 
-    # 如果更新密码，需要加密
     update_data = request.model_dump(exclude_unset=True)
-    if 'password' in update_data and update_data['password']:
-        update_data['password'] = Password.hash(update_data['password'])
-    elif 'password' in update_data:
-        del update_data['password']  # 空密码不更新
-
-    # 验证两步验证密钥格式（如果提供了值且不为 None，长度必须为 32）
-    if 'two_factor' in update_data and update_data['two_factor'] is not None:
-        if len(update_data['two_factor']) != 32:
-            raise HTTPException(status_code=400, detail="两步验证密钥必须为32位字符串")
 
     # 记录旧 status 以便检测变更
     old_status = user.status
@@ -175,7 +191,7 @@ async def router_admin_update_user(
     elif old_status != UserStatus.ACTIVE and new_status == UserStatus.ACTIVE:
         await UserBanStore.unban(str(user_id))
 
-    l.info(f"管理员更新了用户: {request.email}")
+    l.info(f"管理员更新了用户: {user.email}")
 
 
 @admin_user_router.delete(
diff --git a/routers/api/v1/site/__init__.py b/routers/api/v1/site/__init__.py
index 1ec446d..3e5206d 100644
--- a/routers/api/v1/site/__init__.py
+++ b/routers/api/v1/site/__init__.py
@@ -4,7 +4,9 @@ from middleware.dependencies import SessionDep
 from sqlmodels import (
     ResponseBase, Setting, SettingsType, SiteConfigResponse,
     ThemePreset, ThemePresetResponse, ThemePresetListResponse,
+    AuthMethodConfig,
 )
+from sqlmodels.auth_identity import AuthProviderType
 from sqlmodels.setting import CaptchaType
 from utils import http_exceptions
 
@@ -70,7 +72,7 @@ async def router_site_config(session: SessionDep) -> SiteConfigResponse:
     获取站点全局配置
 
     无需认证。前端在初始化时调用此端点获取验证码类型、
-    登录/注册/找回密码是否需要验证码等配置。
+    登录/注册/找回密码是否需要验证码、可用的认证方式等配置。
     """
     # 批量查询所需设置
     settings: list[Setting] = await Setting.get(
@@ -78,7 +80,9 @@ async def router_site_config(session: SessionDep) -> SiteConfigResponse:
         (Setting.type == SettingsType.BASIC) |
         (Setting.type == SettingsType.LOGIN) |
         (Setting.type == SettingsType.REGISTER) |
-        (Setting.type == SettingsType.CAPTCHA),
+        (Setting.type == SettingsType.CAPTCHA) |
+        (Setting.type == SettingsType.AUTH) |
+        (Setting.type == SettingsType.OAUTH),
         fetch_mode="all",
     )
 
@@ -94,6 +98,16 @@ async def router_site_config(session: SessionDep) -> SiteConfigResponse:
     elif captcha_type == CaptchaType.CLOUD_FLARE_TURNSTILE:
         captcha_key = s.get("captcha_CloudflareKey") or None
 
+    # 构建认证方式列表
+    auth_methods: list[AuthMethodConfig] = [
+        AuthMethodConfig(provider=AuthProviderType.EMAIL_PASSWORD, is_enabled=s.get("auth_email_password_enabled") == "1"),
+        AuthMethodConfig(provider=AuthProviderType.PHONE_SMS, is_enabled=s.get("auth_phone_sms_enabled") == "1"),
+        AuthMethodConfig(provider=AuthProviderType.GITHUB, is_enabled=s.get("github_enabled") == "1"),
+        AuthMethodConfig(provider=AuthProviderType.QQ, is_enabled=s.get("qq_enabled") == "1"),
+        AuthMethodConfig(provider=AuthProviderType.PASSKEY, is_enabled=s.get("auth_passkey_enabled") == "1"),
+        AuthMethodConfig(provider=AuthProviderType.MAGIC_LINK, is_enabled=s.get("auth_magic_link_enabled") == "1"),
+    ]
+
     return SiteConfigResponse(
         title=s.get("siteName") or "DiskNext",
         register_enabled=s.get("register_enabled") == "1",
@@ -102,4 +116,11 @@ async def router_site_config(session: SessionDep) -> SiteConfigResponse:
         forget_captcha=s.get("forget_captcha") == "1",
         captcha_type=captcha_type,
         captcha_key=captcha_key,
+        auth_methods=auth_methods,
+        password_required=s.get("auth_password_required") == "1",
+        phone_binding_required=s.get("auth_phone_binding_required") == "1",
+        email_binding_required=s.get("auth_email_binding_required") == "1",
+        footer_code=s.get("footer_code"),
+        tos_url=s.get("tos_url"),
+        privacy_url=s.get("privacy_url"),
     )
\ No newline at end of file
diff --git a/routers/api/v1/user/__init__.py b/routers/api/v1/user/__init__.py
index 44abda3..cb89015 100644
--- a/routers/api/v1/user/__init__.py
+++ b/routers/api/v1/user/__init__.py
@@ -2,7 +2,8 @@ from typing import Annotated, Literal
 from uuid import UUID, uuid4
 
 import jwt
-from fastapi import APIRouter, Depends, Form, HTTPException
+from fastapi import APIRouter, Depends, HTTPException
+from itsdangerous import URLSafeTimedSerializer
 from loguru import logger
 from webauthn import generate_registration_options
 from webauthn.helpers import options_to_json_dict
@@ -12,6 +13,7 @@ import sqlmodels
 from middleware.auth import auth_required
 from middleware.dependencies import SessionDep, require_captcha
 from service.captcha import CaptchaScene
+from sqlmodels.auth_identity import AuthIdentity, AuthProviderType
 from sqlmodels.user import UserStatus
 from utils import JWT, Password, http_exceptions
 from .settings import user_settings_router
@@ -23,59 +25,36 @@ user_router = APIRouter(
 
 user_router.include_router(user_settings_router)
 
-class OAuth2PasswordWithExtrasForm:
-    """
-    扩展 OAuth2 密码表单。
-
-    在标准 username/password 基础上添加 otp_code 字段。
-    captcha_code 由 require_captcha 依赖注入单独处理。
-    """
-
-    def __init__(
-            self,
-            *,
-            username: Annotated[str, Form()],
-            password: Annotated[str, Form()],
-            otp_code: Annotated[str | None, Form(min_length=6, max_length=6)] = None,
-    ):
-        self.username = username
-        self.password = password
-        self.otp_code = otp_code
-
 
 @user_router.post(
     path='/session',
-    summary='用户登录',
-    description='用户登录端点，支持验证码校验和两步验证。',
-    dependencies=[Depends(require_captcha(CaptchaScene.LOGIN))],
+    summary='用户登录（统一入口）',
+    description='统一登录端点，支持多种认证方式。',
 )
 async def router_user_session(
     session: SessionDep,
-    form_data: Annotated[OAuth2PasswordWithExtrasForm, Depends()],
+    request: sqlmodels.UnifiedLoginRequest,
 ) -> sqlmodels.TokenResponse:
     """
-    用户登录端点
+    统一登录端点
 
-    表单字段：
-    - username: 用户邮箱
-    - password: 用户密码
-    - captcha_code: 验证码 token（可选，由 require_captcha 依赖校验）
-    - otp_code: 两步验证码（可选，仅在用户启用 2FA 时需要）
+    请求体：
+    - provider: 登录方式（email_password / github / qq / passkey / magic_link）
+    - identifier: 标识符（邮箱 / OAuth code / credential_id / magic link token）
+    - credential: 凭证（密码 / WebAuthn assertion 等）
+    - two_fa_code: 两步验证码（可选）
+    - redirect_uri: OAuth 回调地址（可选）
+    - captcha: 验证码（可选）
 
     错误处理：
-    - 400: 需要验证码但未提供
-    - 401: 邮箱/密码错误，或 2FA 验证码错误
-    - 403: 账户已禁用 / 验证码验证失败
-    - 428: 需要两步验证但未提供 otp_code
+    - 400: 登录方式未启用 / 参数错误
+    - 401: 凭证错误
+    - 403: 账户已禁用
+    - 428: 需要两步验证
+    - 501: 暂未实现的登录方式
     """
-    return await service.user.login(
-        session,
-        sqlmodels.LoginRequest(
-            email=form_data.username,
-            password=form_data.password,
-            two_fa_code=form_data.otp_code,
-        ),
-    )
+    return await service.user.unified_login(session, request)
+
 
 @user_router.post(
     path='/session/refresh',
@@ -150,41 +129,82 @@ async def router_user_session_refresh(
 
 @user_router.post(
     path='/',
-    summary='用户注册',
+    summary='用户注册（统一入口）',
     description='User registration endpoint.',
     status_code=204,
 )
 async def router_user_register(
     session: SessionDep,
-    request: sqlmodels.RegisterRequest,
+    request: sqlmodels.UnifiedRegisterRequest,
 ) -> None:
     """
-    用户注册端点
+    统一注册端点
 
     流程：
-    1. 验证用户名唯一性
-    2. 获取默认用户组
-    3. 创建用户记录
-    4. 创建用户根目录（name="/"）
+    1. 检查注册开关
+    2. 检查 provider 启用
+    3. 验证 identifier 唯一性（AuthIdentity 表）
+    4. 创建 User + AuthIdentity + 根目录
 
-    :param session: 数据库会话
-    :param request: 注册请求
-    :return: 注册结果
-    :raises HTTPException 400: 用户名已存在
-    :raises HTTPException 500: 默认用户组或存储策略不存在
+    请求体：
+    - provider: 注册方式（email_password / phone_sms）
+    - identifier: 标识符（邮箱 / 手机号）
+    - credential: 凭证（密码 / 短信验证码）
+    - nickname: 昵称（可选）
+    - captcha: 验证码（可选）
+
+    错误处理：
+    - 400: 注册未开放 / 参数错误
+    - 409: 邮箱或手机号已存在
+    - 501: 暂未实现的注册方式
     """
-    # 1. 验证邮箱唯一性
+    # 1. 检查注册开关
+    register_setting = await sqlmodels.Setting.get(
+        session,
+        (sqlmodels.Setting.type == sqlmodels.SettingsType.REGISTER)
+        & (sqlmodels.Setting.name == "register_enabled"),
+    )
+    if not register_setting or register_setting.value != "1":
+        http_exceptions.raise_bad_request("注册功能未开放")
+
+    # 2. 目前只支持 email_password 注册
+    if request.provider == AuthProviderType.PHONE_SMS:
+        http_exceptions.raise_not_implemented("短信注册暂未开放")
+    elif request.provider != AuthProviderType.EMAIL_PASSWORD:
+        http_exceptions.raise_bad_request("不支持的注册方式")
+
+    # 3. 检查密码是否必填
+    password_required_setting = await sqlmodels.Setting.get(
+        session,
+        (sqlmodels.Setting.type == sqlmodels.SettingsType.AUTH)
+        & (sqlmodels.Setting.name == "auth_password_required"),
+    )
+    is_password_required = not password_required_setting or password_required_setting.value != "0"
+    if is_password_required and not request.credential:
+        http_exceptions.raise_bad_request("密码不能为空")
+
+    # 4. 验证 identifier 唯一性（AuthIdentity 表）
+    existing_identity = await AuthIdentity.get(
+        session,
+        (AuthIdentity.provider == request.provider)
+        & (AuthIdentity.identifier == request.identifier),
+    )
+    if existing_identity:
+        raise HTTPException(status_code=409, detail="该邮箱已被注册")
+
+    # 同时检查 User.email 唯一性（防止旧数据冲突）
     existing_user = await sqlmodels.User.get(
         session,
-        sqlmodels.User.email == request.email
+        sqlmodels.User.email == request.identifier,
     )
     if existing_user:
-        raise HTTPException(status_code=400, detail="邮箱已存在")
+        raise HTTPException(status_code=409, detail="该邮箱已被注册")
 
-    # 2. 获取默认用户组（从设置中读取 UUID）
-    default_group_setting: sqlmodels.Setting | None = await sqlmodels.Setting.get(
+    # 5. 获取默认用户组
+    default_group_setting = await sqlmodels.Setting.get(
         session,
-        (sqlmodels.Setting.type == sqlmodels.SettingsType.REGISTER) & (sqlmodels.Setting.name == "default_group")
+        (sqlmodels.Setting.type == sqlmodels.SettingsType.REGISTER)
+        & (sqlmodels.Setting.name == "default_group"),
     )
     if default_group_setting is None or not default_group_setting.value:
         logger.error("默认用户组不存在")
@@ -196,17 +216,28 @@ async def router_user_register(
         logger.error("默认用户组不存在")
         http_exceptions.raise_internal_error()
 
-    # 3. 创建用户
-    hashed_password = Password.hash(request.password)
+    # 6. 创建用户
     new_user = sqlmodels.User(
-        email=request.email,
-        password=hashed_password,
+        email=request.identifier,
+        nickname=request.nickname,
         group_id=default_group.id,
     )
     new_user_id = new_user.id
     await new_user.save(session)
 
-    # 4. 创建用户根目录
+    # 7. 创建 AuthIdentity
+    hashed_password = Password.hash(request.credential) if request.credential else None
+    identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier=request.identifier,
+        credential=hashed_password,
+        is_primary=True,
+        is_verified=False,
+        user_id=new_user_id,
+    )
+    await identity.save(session)
+
+    # 8. 创建用户根目录
     default_policy = await sqlmodels.Policy.get(session, sqlmodels.Policy.name == "本地存储")
     if not default_policy:
         logger.error("默认存储策略不存在")
@@ -220,6 +251,66 @@ async def router_user_register(
         policy_id=default_policy.id,
     ).save(session)
 
+
+@user_router.post(
+    path='/magic-link',
+    summary='发送 Magic Link 邮件',
+    description='生成 Magic Link token 并发送到指定邮箱。',
+    status_code=204,
+)
+async def router_user_magic_link(
+    session: SessionDep,
+    request: sqlmodels.MagicLinkRequest,
+) -> None:
+    """
+    发送 Magic Link 邮件
+
+    流程：
+    1. 验证邮箱对应的 AuthIdentity 存在
+    2. 生成签名 token
+    3. 发送邮件（包含带 token 的链接）
+
+    错误处理：
+    - 400: Magic Link 未启用
+    - 404: 邮箱未注册
+    """
+    # 检查 magic_link 是否启用
+    magic_link_setting = await sqlmodels.Setting.get(
+        session,
+        (sqlmodels.Setting.type == sqlmodels.SettingsType.AUTH)
+        & (sqlmodels.Setting.name == "auth_magic_link_enabled"),
+    )
+    if not magic_link_setting or magic_link_setting.value != "1":
+        http_exceptions.raise_bad_request("Magic Link 登录未启用")
+
+    # 验证邮箱存在
+    identity = await AuthIdentity.get(
+        session,
+        (AuthIdentity.identifier == request.email)
+        & (
+            (AuthIdentity.provider == AuthProviderType.EMAIL_PASSWORD)
+            | (AuthIdentity.provider == AuthProviderType.MAGIC_LINK)
+        ),
+    )
+    if not identity:
+        http_exceptions.raise_not_found("该邮箱未注册")
+
+    # 生成签名 token
+    serializer = URLSafeTimedSerializer(JWT.SECRET_KEY)
+    token = serializer.dumps(request.email, salt="magic-link-salt")
+
+    # 获取站点 URL
+    site_url_setting = await sqlmodels.Setting.get(
+        session,
+        (sqlmodels.Setting.type == sqlmodels.SettingsType.BASIC)
+        & (sqlmodels.Setting.name == "siteURL"),
+    )
+    site_url = site_url_setting.value if site_url_setting else "http://localhost"
+
+    # TODO: 发送邮件（包含 {site_url}/auth/magic-link?token={token}）
+    logger.info(f"Magic Link token 已生成: {token} (邮件发送待实现)")
+
+
 @user_router.post(
     path='/code',
     summary='发送验证码邮件',
@@ -230,52 +321,12 @@ def router_user_email_code(
 ) -> sqlmodels.ResponseBase:
     """
     Send a verification code email.
-    
+
     Returns:
         dict: A dictionary containing information about the password reset email.
     """
     http_exceptions.raise_not_implemented()
 
-@user_router.get(
-    path='/qq',
-    summary='初始化QQ登录',
-    description='Initialize QQ login for a user.',
-)
-def router_user_qq() -> sqlmodels.ResponseBase: 
-    """
-    Initialize QQ login for a user.
-    
-    Returns:
-        dict: A dictionary containing QQ login initialization information.
-    """
-    http_exceptions.raise_not_implemented()
-
-@user_router.get(
-    path='authn/{username}',
-    summary='WebAuthn登录初始化',
-    description='Initialize WebAuthn login for a user.',
-)
-async def router_user_authn(username: str) -> sqlmodels.ResponseBase:
-    
-    http_exceptions.raise_not_implemented()
-
-@user_router.post(
-    path='authn/finish/{username}',
-    summary='WebAuthn登录',
-    description='Finish WebAuthn login for a user.',
-)
-def router_user_authn_finish(username: str) -> sqlmodels.ResponseBase:
-    """
-    Finish WebAuthn login for a user.
-    
-    Args:
-        username (str): The username of the user.
-    
-    Returns:
-        dict: A dictionary containing WebAuthn login information.
-    """
-    http_exceptions.raise_not_implemented()
-
 @user_router.get(
     path='/profile/{id}',
     summary='获取用户主页展示用分享',
@@ -284,10 +335,10 @@ def router_user_authn_finish(username: str) -> sqlmodels.ResponseBase:
 def router_user_profile(id: str) -> sqlmodels.ResponseBase:
     """
     Get user profile for display.
-    
+
     Args:
         id (str): The user ID.
-    
+
     Returns:
         dict: A dictionary containing user profile information.
     """
@@ -301,11 +352,11 @@ def router_user_profile(id: str) -> sqlmodels.ResponseBase:
 def router_user_avatar(id: str, size: int = 128) -> sqlmodels.ResponseBase:
     """
     Get user avatar by ID and size.
-    
+
     Args:
         id (str): The user ID.
         size (int): The size of the avatar image.
-    
+
     Returns:
         str: A Base64 encoded string of the user avatar image.
     """
@@ -348,8 +399,6 @@ async def router_user_me(
     return sqlmodels.UserResponse(
         id=user.id,
         email=user.email,
-        status=user.status,
-        score=user.score,
         nickname=user.nickname,
         avatar=user.avatar,
         created_at=user.created_at,
@@ -374,9 +423,9 @@ async def router_user_storage(
     group = await sqlmodels.Group.get(session, sqlmodels.Group.id == user.group_id)
     if not group:
         raise HTTPException(status_code=404, detail="用户组不存在")
-    
+
     # [TODO] 总空间加上用户购买的额外空间
-    
+
     total: int = group.max_storage
     used: int = user.storage
     free: int = max(0, total - used)
@@ -389,8 +438,8 @@ async def router_user_storage(
 
 @user_router.put(
     path='/authn/start',
-    summary='WebAuthn登录初始化',
-    description='Initialize WebAuthn login for a user.',
+    summary='注册 Passkey 凭证（初始化）',
+    description='Initialize Passkey registration for a user.',
     dependencies=[Depends(auth_required)],
 )
 async def router_user_authn_start(
@@ -398,18 +447,19 @@ async def router_user_authn_start(
     user: Annotated[sqlmodels.user.User, Depends(auth_required)],
 ) -> sqlmodels.ResponseBase:
     """
-    Initialize WebAuthn login for a user.
+    Passkey 注册初始化（需要登录）
 
-    Returns:
-        dict: A dictionary containing WebAuthn initialization information.
+    返回 WebAuthn registration options，前端使用 navigator.credentials.create() 处理。
+
+    错误处理：
+    - 400: Passkey 未启用
     """
-    # TODO: 检查 WebAuthn 是否开启，用户是否有注册过 WebAuthn 设备等
     authn_setting = await sqlmodels.Setting.get(
         session,
         (sqlmodels.Setting.type == "authn") & (sqlmodels.Setting.name == "authn_enabled")
     )
     if not authn_setting or authn_setting.value != "1":
-        raise HTTPException(status_code=400, detail="WebAuthn is not enabled")
+        raise HTTPException(status_code=400, detail="Passkey 未启用")
 
     site_url_setting = await sqlmodels.Setting.get(
         session,
@@ -423,23 +473,26 @@ async def router_user_authn_start(
     options = generate_registration_options(
         rp_id=site_url_setting.value if site_url_setting else "",
         rp_name=site_title_setting.value if site_title_setting else "",
-        user_name=user.email,
-        user_display_name=user.nickname or user.email,
+        user_name=user.email or str(user.id),
+        user_display_name=user.nickname or user.email or str(user.id),
     )
 
     return sqlmodels.ResponseBase(data=options_to_json_dict(options))
 
 @user_router.put(
     path='/authn/finish',
-    summary='WebAuthn登录',
-    description='Finish WebAuthn login for a user.',
+    summary='注册 Passkey 凭证（完成）',
+    description='Finish Passkey registration for a user.',
     dependencies=[Depends(auth_required)],
 )
 def router_user_authn_finish() -> sqlmodels.ResponseBase:
     """
-    Finish WebAuthn login for a user.
-    
+    Passkey 注册完成（需要登录）
+
+    接收前端 navigator.credentials.create() 返回的凭证数据，
+    创建 UserAuthn 行 + AuthIdentity(provider=passkey)。
+
     Returns:
-        dict: A dictionary containing WebAuthn login information.
+        dict: A dictionary containing Passkey registration information.
     """
-    http_exceptions.raise_not_implemented()
\ No newline at end of file
+    http_exceptions.raise_not_implemented()
diff --git a/routers/api/v1/user/settings/__init__.py b/routers/api/v1/user/settings/__init__.py
index 75b5738..534b6bb 100644
--- a/routers/api/v1/user/settings/__init__.py
+++ b/routers/api/v1/user/settings/__init__.py
@@ -1,4 +1,5 @@
 from typing import Annotated
+from uuid import UUID
 
 from fastapi import APIRouter, Depends, HTTPException, status
 from itsdangerous import URLSafeTimedSerializer, BadSignature, SignatureExpired
@@ -9,6 +10,7 @@ from middleware.dependencies import SessionDep
 from sqlmodels import (
     BUILTIN_DEFAULT_COLORS, ThemePreset, UserThemeUpdateRequest,
     SettingOption, UserSettingUpdateRequest,
+    AuthIdentity, AuthIdentityResponse, AuthProviderType, BindIdentityRequest,
 )
 from sqlmodels.color import ThemeColorsBase
 from utils import JWT, Password, http_exceptions
@@ -117,16 +119,29 @@ async def router_user_settings(
         else:
             theme_colors = BUILTIN_DEFAULT_COLORS
 
+    # 检查是否启用了两步验证（从 email_password AuthIdentity 的 extra_data 中读取）
+    has_two_factor = False
+    email_identity: AuthIdentity | None = await AuthIdentity.get(
+        session,
+        (AuthIdentity.user_id == user.id)
+        & (AuthIdentity.provider == AuthProviderType.EMAIL_PASSWORD),
+    )
+    if email_identity and email_identity.extra_data:
+        import orjson
+        extra: dict = orjson.loads(email_identity.extra_data)
+        has_two_factor = bool(extra.get("two_factor"))
+
     return sqlmodels.UserSettingResponse(
         id=user.id,
         email=user.email,
+        phone=user.phone,
         nickname=user.nickname,
         created_at=user.created_at,
         group_name=user.group.name,
         language=user.language,
         timezone=user.timezone,
         group_expires=user.group_expires,
-        two_factor=user.two_factor is not None,
+        two_factor=has_two_factor,
         theme_preset_id=user.theme_preset_id,
         theme_colors=theme_colors,
     )
@@ -255,7 +270,7 @@ async def router_user_settings_2fa(
 
     返回 setup_token（用于后续验证请求）和 uri（用于生成二维码）。
     """
-    return await Password.generate_totp(name=user.email)
+    return await Password.generate_totp(name=user.email or str(user.id))
 
 
 @user_settings_router.post(
@@ -273,7 +288,7 @@ async def router_user_settings_2fa_enable(
     """
     启用两步验证
 
-    请求体包含 setup_token（GET /2fa 返回的令牌）和 code（6 位验证码）。
+    将 2FA secret 存储到 email_password AuthIdentity 的 extra_data 中。
     """
     serializer = URLSafeTimedSerializer(JWT.SECRET_KEY)
 
@@ -287,6 +302,150 @@ async def router_user_settings_2fa_enable(
     if Password.verify_totp(secret, request.code) != PasswordStatus.VALID:
         raise HTTPException(status_code=400, detail="Invalid OTP code")
 
-    # 3. 将 secret 存储到用户的数据库记录中，启用 2FA
-    user.two_factor = secret
-    user = await user.save(session)
\ No newline at end of file
+    # 将 secret 存储到 AuthIdentity.extra_data 中
+    email_identity: AuthIdentity | None = await AuthIdentity.get(
+        session,
+        (AuthIdentity.user_id == user.id)
+        & (AuthIdentity.provider == AuthProviderType.EMAIL_PASSWORD),
+    )
+    if not email_identity:
+        raise HTTPException(status_code=400, detail="未找到邮箱密码认证身份")
+
+    import orjson
+    extra: dict = orjson.loads(email_identity.extra_data) if email_identity.extra_data else {}
+    extra["two_factor"] = secret
+    email_identity.extra_data = orjson.dumps(extra).decode('utf-8')
+    await email_identity.save(session)
+
+
+# ==================== 认证身份管理 ====================
+
+@user_settings_router.get(
+    path='/identities',
+    summary='列出已绑定的认证身份',
+)
+async def router_user_settings_identities(
+    session: SessionDep,
+    user: Annotated[sqlmodels.user.User, Depends(auth_required)],
+) -> list[AuthIdentityResponse]:
+    """
+    列出当前用户已绑定的所有认证身份
+
+    返回：
+    - 认证身份列表，包含 provider、identifier、display_name 等
+    """
+    identities: list[AuthIdentity] = await AuthIdentity.get(
+        session,
+        AuthIdentity.user_id == user.id,
+        fetch_mode="all",
+    )
+    return [identity.to_response() for identity in identities]
+
+
+@user_settings_router.post(
+    path='/identity',
+    summary='绑定新的认证身份',
+    status_code=status.HTTP_201_CREATED,
+)
+async def router_user_settings_bind_identity(
+    session: SessionDep,
+    user: Annotated[sqlmodels.user.User, Depends(auth_required)],
+    request: BindIdentityRequest,
+) -> AuthIdentityResponse:
+    """
+    绑定新的登录方式
+
+    请求体：
+    - provider: 提供者类型
+    - identifier: 标识符（邮箱 / 手机号 / OAuth code）
+    - credential: 凭证（密码、验证码等）
+    - redirect_uri: OAuth 回调地址（可选）
+
+    错误处理：
+    - 400: provider 未启用
+    - 409: 该身份已被其他用户绑定
+    """
+    # 检查是否已被绑定
+    existing = await AuthIdentity.get(
+        session,
+        (AuthIdentity.provider == request.provider)
+        & (AuthIdentity.identifier == request.identifier),
+    )
+    if existing:
+        raise HTTPException(status_code=409, detail="该身份已被绑定")
+
+    # 处理密码类型的凭证
+    credential: str | None = None
+    if request.provider == AuthProviderType.EMAIL_PASSWORD and request.credential:
+        credential = Password.hash(request.credential)
+
+    identity = AuthIdentity(
+        provider=request.provider,
+        identifier=request.identifier,
+        credential=credential,
+        is_primary=False,
+        is_verified=False,
+        user_id=user.id,
+    )
+    identity = await identity.save(session)
+    return identity.to_response()
+
+
+@user_settings_router.delete(
+    path='/identity/{identity_id}',
+    summary='解绑认证身份',
+    status_code=status.HTTP_204_NO_CONTENT,
+)
+async def router_user_settings_unbind_identity(
+    session: SessionDep,
+    user: Annotated[sqlmodels.user.User, Depends(auth_required)],
+    identity_id: UUID,
+) -> None:
+    """
+    解绑一个认证身份
+
+    约束：
+    - 不能解绑最后一个身份
+    - 站长配置强制绑定邮箱/手机号时，不能解绑对应身份
+
+    错误处理：
+    - 404: 身份不存在或不属于当前用户
+    - 400: 不能解绑最后一个身份 / 不能解绑强制绑定的身份
+    """
+    # 查找目标身份
+    identity: AuthIdentity | None = await AuthIdentity.get(
+        session,
+        (AuthIdentity.id == identity_id) & (AuthIdentity.user_id == user.id),
+    )
+    if not identity:
+        http_exceptions.raise_not_found("认证身份不存在")
+
+    # 检查是否为最后一个身份
+    all_identities: list[AuthIdentity] = await AuthIdentity.get(
+        session,
+        AuthIdentity.user_id == user.id,
+        fetch_mode="all",
+    )
+    if len(all_identities) <= 1:
+        http_exceptions.raise_bad_request("不能解绑最后一个认证身份")
+
+    # 检查强制绑定约束
+    if identity.provider == AuthProviderType.EMAIL_PASSWORD:
+        email_required_setting = await sqlmodels.Setting.get(
+            session,
+            (sqlmodels.Setting.type == sqlmodels.SettingsType.AUTH)
+            & (sqlmodels.Setting.name == "auth_email_binding_required"),
+        )
+        if email_required_setting and email_required_setting.value == "1":
+            http_exceptions.raise_bad_request("站长要求必须绑定邮箱，不能解绑")
+
+    if identity.provider == AuthProviderType.PHONE_SMS:
+        phone_required_setting = await sqlmodels.Setting.get(
+            session,
+            (sqlmodels.Setting.type == sqlmodels.SettingsType.AUTH)
+            & (sqlmodels.Setting.name == "auth_phone_binding_required"),
+        )
+        if phone_required_setting and phone_required_setting.value == "1":
+            http_exceptions.raise_bad_request("站长要求必须绑定手机号，不能解绑")
+
+    await AuthIdentity.delete(session, identity)
diff --git a/service/user/__init__.py b/service/user/__init__.py
index ee9b18b..5c7bd9a 100644
--- a/service/user/__init__.py
+++ b/service/user/__init__.py
@@ -1 +1 @@
-from .login import login
\ No newline at end of file
+from .login import unified_login
diff --git a/service/user/login.py b/service/user/login.py
index ee0ad68..7515f3b 100644
--- a/service/user/login.py
+++ b/service/user/login.py
@@ -1,83 +1,417 @@
-from uuid import uuid4
+"""
+统一登录服务
 
-from loguru import logger
+支持多种认证方式：邮箱密码、GitHub OAuth、QQ OAuth、Passkey、Magic Link、手机短信（预留）。
+"""
+from uuid import UUID, uuid4
 
-from middleware.dependencies import SessionDep
-from sqlmodels import LoginRequest, TokenResponse, User
+from itsdangerous import URLSafeTimedSerializer, BadSignature, SignatureExpired
+from loguru import logger as l
+from sqlmodel.ext.asyncio.session import AsyncSession
+
+from sqlmodels.auth_identity import AuthIdentity, AuthProviderType
 from sqlmodels.group import GroupClaims, GroupOptions
-from sqlmodels.user import UserStatus
-from utils import http_exceptions
-from utils.JWT import create_access_token, create_refresh_token
+from sqlmodels.object import Object, ObjectType
+from sqlmodels.policy import Policy
+from sqlmodels.setting import Setting, SettingsType
+from sqlmodels.user import TokenResponse, UnifiedLoginRequest, User, UserStatus
+from utils import JWT, http_exceptions
 from utils.password.pwd import Password, PasswordStatus
 
 
-async def login(
-    session: SessionDep,
-    login_request: LoginRequest,
+async def unified_login(
+    session: AsyncSession,
+    request: UnifiedLoginRequest,
 ) -> TokenResponse:
     """
-    根据账号密码进行登录。
-    如果登录成功，返回一个 TokenResponse 对象，包含访问令牌和刷新令牌以及它们的过期时间。
+    统一登录入口，根据 provider 分发到不同的登录逻辑。
 
     :param session: 数据库会话
-    :param login_request: 登录请求
-
-    :return: TokenResponse 对象或状态码或 None
+    :param request: 统一登录请求
+    :return: TokenResponse
     """
-    # 获取用户信息（预加载 group 关系）
-    current_user: User = await User.get(
+    await _check_provider_enabled(session, request.provider)
+
+    match request.provider:
+        case AuthProviderType.EMAIL_PASSWORD:
+            user = await _login_email_password(session, request)
+        case AuthProviderType.GITHUB:
+            user = await _login_oauth(session, request, AuthProviderType.GITHUB)
+        case AuthProviderType.QQ:
+            user = await _login_oauth(session, request, AuthProviderType.QQ)
+        case AuthProviderType.PASSKEY:
+            user = await _login_passkey(session, request)
+        case AuthProviderType.MAGIC_LINK:
+            user = await _login_magic_link(session, request)
+        case AuthProviderType.PHONE_SMS:
+            http_exceptions.raise_not_implemented("短信登录暂未开放")
+        case _:
+            http_exceptions.raise_bad_request(f"不支持的登录方式: {request.provider}")
+
+    return await _issue_tokens(session, user)
+
+
+async def _check_provider_enabled(session: AsyncSession, provider: AuthProviderType) -> None:
+    """检查认证方式是否已被站长启用"""
+    # OAuth 类型从 OAUTH 设置中查询
+    if provider in (AuthProviderType.GITHUB, AuthProviderType.QQ):
+        setting_name = f"{provider.value}_enabled"
+        setting = await Setting.get(
+            session,
+            (Setting.type == SettingsType.OAUTH) & (Setting.name == setting_name),
+        )
+        if not setting or setting.value != "1":
+            http_exceptions.raise_bad_request(f"登录方式 {provider.value} 未启用")
+        return
+
+    # 其他类型从 AUTH 设置中查询
+    setting_name = f"auth_{provider.value}_enabled"
+    setting = await Setting.get(
         session,
-        User.email == login_request.email,
-        fetch_mode="first",
-        load=User.group,
-    )   #type: ignore
+        (Setting.type == SettingsType.AUTH) & (Setting.name == setting_name),
+    )
+    if not setting or setting.value != "1":
+        http_exceptions.raise_bad_request(f"登录方式 {provider.value} 未启用")
 
-    # 验证用户是否存在
-    if not current_user:
-        logger.debug(f"Cannot find user with email: {login_request.email}")
-        http_exceptions.raise_unauthorized("Invalid email or password")
 
-    # 验证密码是否正确
-    if Password.verify(current_user.password, login_request.password) != PasswordStatus.VALID:
-        logger.debug(f"Password verification failed for user: {login_request.email}")
-        http_exceptions.raise_unauthorized("Invalid email or password")
+async def _login_email_password(
+    session: AsyncSession,
+    request: UnifiedLoginRequest,
+) -> User:
+    """邮箱+密码登录"""
+    if not request.credential:
+        http_exceptions.raise_bad_request("密码不能为空")
 
-    # 验证用户是否可登录（修复：显式枚举比较，StrEnum 永远 truthy）
-    if current_user.status != UserStatus.ACTIVE:
-        http_exceptions.raise_forbidden("Your account is disabled")
+    # 查找 AuthIdentity
+    identity: AuthIdentity | None = await AuthIdentity.get(
+        session,
+        (AuthIdentity.provider == AuthProviderType.EMAIL_PASSWORD)
+        & (AuthIdentity.identifier == request.identifier),
+    )
+    if not identity:
+        l.debug(f"未找到邮箱密码身份: {request.identifier}")
+        http_exceptions.raise_unauthorized("邮箱或密码错误")
 
-    # 检查两步验证
-    if current_user.two_factor:
-        # 用户已启用两步验证
-        if not login_request.two_fa_code:
-            logger.debug(f"2FA required for user: {login_request.email}")
-            http_exceptions.raise_precondition_required("2FA required")
+    # 验证密码
+    if not identity.credential:
+        http_exceptions.raise_unauthorized("邮箱或密码错误")
 
-        # 验证 OTP 码
-        if Password.verify_totp(current_user.two_factor, login_request.two_fa_code) != PasswordStatus.VALID:
-            logger.debug(f"Invalid 2FA code for user: {login_request.email}")
-            http_exceptions.raise_unauthorized("Invalid 2FA code")
+    if Password.verify(identity.credential, request.credential) != PasswordStatus.VALID:
+        l.debug(f"密码验证失败: {request.identifier}")
+        http_exceptions.raise_unauthorized("邮箱或密码错误")
 
+    # 加载用户
+    user: User = await User.get(session, User.id == identity.user_id, load=User.group)
+    if not user:
+        http_exceptions.raise_unauthorized("用户不存在")
+
+    # 验证用户状态
+    if user.status != UserStatus.ACTIVE:
+        http_exceptions.raise_forbidden("账户已被禁用")
+
+    # 检查两步验证（从 AuthIdentity.extra_data 中读取 2FA secret）
+    if identity.extra_data:
+        import orjson
+        extra: dict = orjson.loads(identity.extra_data)
+        two_factor_secret: str | None = extra.get("two_factor")
+        if two_factor_secret:
+            if not request.two_fa_code:
+                l.debug(f"需要两步验证: {request.identifier}")
+                http_exceptions.raise_precondition_required("需要两步验证")
+            if Password.verify_totp(two_factor_secret, request.two_fa_code) != PasswordStatus.VALID:
+                l.debug(f"两步验证失败: {request.identifier}")
+                http_exceptions.raise_unauthorized("两步验证码错误")
+
+    return user
+
+
+async def _login_oauth(
+    session: AsyncSession,
+    request: UnifiedLoginRequest,
+    provider: AuthProviderType,
+) -> User:
+    """
+    OAuth 登录（GitHub / QQ）
+
+    identifier 为 OAuth authorization code，后端换取 access_token 再获取用户信息。
+    """
+    # 读取 OAuth 配置
+    client_id_setting = await Setting.get(
+        session,
+        (Setting.type == SettingsType.OAUTH) & (Setting.name == f"{provider.value}_client_id"),
+    )
+    client_secret_setting = await Setting.get(
+        session,
+        (Setting.type == SettingsType.OAUTH) & (Setting.name == f"{provider.value}_client_secret"),
+    )
+    if not client_id_setting or not client_secret_setting:
+        http_exceptions.raise_bad_request(f"{provider.value} OAuth 未配置")
+
+    client_id = client_id_setting.value or ""
+    client_secret = client_secret_setting.value or ""
+
+    # 根据 provider 创建对应的 OAuth 客户端
+    if provider == AuthProviderType.GITHUB:
+        from service.oauth import GithubOAuth
+        oauth_client = GithubOAuth(client_id, client_secret)
+        token_resp = await oauth_client.get_access_token(code=request.identifier)
+        user_info_resp = await oauth_client.get_user_info(token_resp)
+        openid = str(user_info_resp.user_data.id)
+        nickname = user_info_resp.user_data.name or user_info_resp.user_data.login
+        avatar_url = user_info_resp.user_data.avatar_url
+        email = user_info_resp.user_data.email
+    elif provider == AuthProviderType.QQ:
+        from service.oauth import QQOAuth
+        oauth_client = QQOAuth(client_id, client_secret)
+        token_resp = await oauth_client.get_access_token(
+            code=request.identifier,
+            redirect_uri=request.redirect_uri or "",
+        )
+        openid_resp = await oauth_client.get_openid(token_resp.access_token)
+        user_info_resp = await oauth_client.get_user_info(
+            token_resp,
+            app_id=client_id,
+            openid=openid_resp.openid,
+        )
+        openid = openid_resp.openid
+        nickname = user_info_resp.user_data.nickname
+        avatar_url = user_info_resp.user_data.figureurl_qq_2 or user_info_resp.user_data.figureurl_2
+        email = None
+    else:
+        http_exceptions.raise_bad_request(f"不支持的 OAuth 提供者: {provider.value}")
+
+    # 查找已有 AuthIdentity
+    identity: AuthIdentity | None = await AuthIdentity.get(
+        session,
+        (AuthIdentity.provider == provider) & (AuthIdentity.identifier == openid),
+    )
+
+    if identity:
+        # 已绑定 → 更新 OAuth 信息并返回关联用户
+        identity.display_name = nickname
+        identity.avatar_url = avatar_url
+        await identity.save(session)
+
+        user: User = await User.get(session, User.id == identity.user_id, load=User.group)
+        if not user:
+            http_exceptions.raise_unauthorized("用户不存在")
+        if user.status != UserStatus.ACTIVE:
+            http_exceptions.raise_forbidden("账户已被禁用")
+        return user
+
+    # 未绑定 → 自动注册
+    user = await _auto_register_oauth_user(
+        session,
+        provider=provider,
+        openid=openid,
+        nickname=nickname,
+        avatar_url=avatar_url,
+        email=email,
+    )
+    return user
+
+
+async def _auto_register_oauth_user(
+    session: AsyncSession,
+    *,
+    provider: AuthProviderType,
+    openid: str,
+    nickname: str | None,
+    avatar_url: str | None,
+    email: str | None,
+) -> User:
+    """OAuth 自动注册用户"""
+    # 获取默认用户组
+    default_group_setting = await Setting.get(
+        session,
+        (Setting.type == SettingsType.REGISTER) & (Setting.name == "default_group"),
+    )
+    if not default_group_setting or not default_group_setting.value:
+        l.error("默认用户组未配置")
+        http_exceptions.raise_internal_error()
+
+    default_group_id = UUID(default_group_setting.value)
+
+    # 创建用户
+    new_user = User(
+        email=email,
+        nickname=nickname,
+        avatar=avatar_url or "default",
+        group_id=default_group_id,
+    )
+    new_user_id = new_user.id
+    new_user = await new_user.save(session)
+
+    # 创建 AuthIdentity
+    identity = AuthIdentity(
+        provider=provider,
+        identifier=openid,
+        display_name=nickname,
+        avatar_url=avatar_url,
+        is_primary=True,
+        is_verified=True,
+        user_id=new_user_id,
+    )
+    await identity.save(session)
+
+    # 创建用户根目录
+    default_policy = await Policy.get(session, Policy.name == "本地存储")
+    if default_policy:
+        await Object(
+            name="/",
+            type=ObjectType.FOLDER,
+            owner_id=new_user_id,
+            parent_id=None,
+            policy_id=default_policy.id,
+        ).save(session)
+
+    # 重新加载用户（含 group 关系）
+    user: User = await User.get(session, User.id == new_user_id, load=User.group)
+    l.info(f"OAuth 自动注册用户: provider={provider.value}, openid={openid}")
+    return user
+
+
+async def _login_passkey(
+    session: AsyncSession,
+    request: UnifiedLoginRequest,
+) -> User:
+    """
+    Passkey/WebAuthn 登录
+
+    identifier 为 credential_id，credential 为 JSON 格式的 authenticator assertion response。
+    """
+    from webauthn import verify_authentication_response
+    from webauthn.helpers.structs import AuthenticationCredential
+
+    if not request.credential:
+        http_exceptions.raise_bad_request("WebAuthn assertion response 不能为空")
+
+    # 查找 AuthIdentity
+    identity: AuthIdentity | None = await AuthIdentity.get(
+        session,
+        (AuthIdentity.provider == AuthProviderType.PASSKEY)
+        & (AuthIdentity.identifier == request.identifier),
+    )
+    if not identity:
+        http_exceptions.raise_unauthorized("Passkey 凭证未注册")
+
+    # 加载对应的 UserAuthn 记录
+    from sqlmodels.user_authn import UserAuthn
+    authn: UserAuthn | None = await UserAuthn.get(
+        session,
+        UserAuthn.credential_id == request.identifier,
+    )
+    if not authn:
+        http_exceptions.raise_unauthorized("Passkey 凭证数据不存在")
+
+    # 获取 RP ID
+    site_url_setting = await Setting.get(
+        session,
+        (Setting.type == SettingsType.BASIC) & (Setting.name == "siteURL"),
+    )
+    rp_id = site_url_setting.value if site_url_setting else "localhost"
+
+    # 验证 WebAuthn assertion
+    import orjson
+    credential = AuthenticationCredential.model_validate(orjson.loads(request.credential))
+
+    try:
+        verification = verify_authentication_response(
+            credential=credential,
+            expected_rp_id=rp_id,
+            expected_origin=f"https://{rp_id}",
+            expected_challenge=b"",  # TODO: 从 session/cache 中获取 challenge
+            credential_public_key=bytes.fromhex(authn.credential_public_key),
+            credential_current_sign_count=authn.sign_count,
+        )
+    except Exception as e:
+        l.warning(f"WebAuthn 验证失败: {e}")
+        http_exceptions.raise_unauthorized("Passkey 验证失败")
+
+    # 更新签名计数
+    authn.sign_count = verification.new_sign_count
+    await authn.save(session)
+
+    # 加载用户
+    user: User = await User.get(session, User.id == identity.user_id, load=User.group)
+    if not user:
+        http_exceptions.raise_unauthorized("用户不存在")
+    if user.status != UserStatus.ACTIVE:
+        http_exceptions.raise_forbidden("账户已被禁用")
+
+    return user
+
+
+async def _login_magic_link(
+    session: AsyncSession,
+    request: UnifiedLoginRequest,
+) -> User:
+    """
+    Magic Link 登录
+
+    identifier 为签名 token，由 itsdangerous 生成。
+    """
+    serializer = URLSafeTimedSerializer(JWT.SECRET_KEY)
+
+    try:
+        email = serializer.loads(request.identifier, salt="magic-link-salt", max_age=600)
+    except SignatureExpired:
+        http_exceptions.raise_unauthorized("Magic Link 已过期")
+    except BadSignature:
+        http_exceptions.raise_unauthorized("Magic Link 无效")
+
+    # 查找绑定了该邮箱的 AuthIdentity（email_password 或 magic_link）
+    identity: AuthIdentity | None = await AuthIdentity.get(
+        session,
+        (AuthIdentity.identifier == email)
+        & (
+            (AuthIdentity.provider == AuthProviderType.EMAIL_PASSWORD)
+            | (AuthIdentity.provider == AuthProviderType.MAGIC_LINK)
+        ),
+    )
+    if not identity:
+        http_exceptions.raise_unauthorized("该邮箱未注册")
+
+    user: User = await User.get(session, User.id == identity.user_id, load=User.group)
+    if not user:
+        http_exceptions.raise_unauthorized("用户不存在")
+    if user.status != UserStatus.ACTIVE:
+        http_exceptions.raise_forbidden("账户已被禁用")
+
+    # 标记邮箱已验证
+    if not identity.is_verified:
+        identity.is_verified = True
+        await identity.save(session)
+
+    return user
+
+
+async def _issue_tokens(session: AsyncSession, user: User) -> TokenResponse:
+    """
+    签发 JWT 双令牌（access + refresh）
+
+    提取自原 login.py 的签发逻辑，供所有 provider 共用。
+    """
     # 加载 GroupOptions
     group_options: GroupOptions | None = await GroupOptions.get(
         session,
-        GroupOptions.group_id == current_user.group_id,
+        GroupOptions.group_id == user.group_id,
     )
 
     # 构建权限快照
-    current_user.group.options = group_options
-    group_claims = GroupClaims.from_group(current_user.group)
+    user.group.options = group_options
+    group_claims = GroupClaims.from_group(user.group)
 
     # 创建令牌
-    access_token = create_access_token(
-        sub=current_user.id,
+    access_token = JWT.create_access_token(
+        sub=user.id,
         jti=uuid4(),
-        status=current_user.status.value,
+        status=user.status.value,
         group=group_claims,
     )
-    refresh_token = create_refresh_token(
-        sub=current_user.id,
-        jti=uuid4()
+    refresh_token = JWT.create_refresh_token(
+        sub=user.id,
+        jti=uuid4(),
     )
 
     return TokenResponse(
diff --git a/sqlmodels/__init__.py b/sqlmodels/__init__.py
index fd5749d..c0b1246 100644
--- a/sqlmodels/__init__.py
+++ b/sqlmodels/__init__.py
@@ -1,9 +1,16 @@
+from .auth_identity import (
+    AuthIdentity,
+    AuthIdentityResponse,
+    AuthProviderType,
+    BindIdentityRequest,
+)
 from .user import (
     BatchDeleteRequest,
     JWTPayload,
-    LoginRequest,
+    MagicLinkRequest,
+    UnifiedLoginRequest,
+    UnifiedRegisterRequest,
     RefreshTokenRequest,
-    RegisterRequest,
     AccessTokenBase,
     RefreshTokenBase,
     TokenResponse,
@@ -89,7 +96,7 @@ from .policy import Policy, PolicyBase, PolicyOptions, PolicyOptionsBase, Policy
 from .redeem import Redeem, RedeemType
 from .report import Report, ReportReason
 from .setting import (
-    Setting, SettingsType, SiteConfigResponse,
+    Setting, SettingsType, SiteConfigResponse, AuthMethodConfig,
     # 管理员DTO
     SettingItem, SettingsListResponse, SettingsUpdateRequest, SettingsUpdateResponse,
 )
@@ -120,4 +127,4 @@ from .model_base import (
 )
 
 # mixin 中的通用分页模型
-from .mixin import ListResponse
\ No newline at end of file
+from .mixin import ListResponse
diff --git a/sqlmodels/auth_identity.py b/sqlmodels/auth_identity.py
new file mode 100644
index 0000000..5649f43
--- /dev/null
+++ b/sqlmodels/auth_identity.py
@@ -0,0 +1,139 @@
+"""
+认证身份模块
+
+一个用户可拥有多种登录方式（邮箱密码、OAuth、Passkey、Magic Link 等）。
+AuthIdentity 表存储每种认证方式的凭证信息。
+"""
+from enum import StrEnum
+from typing import TYPE_CHECKING
+from uuid import UUID
+
+from sqlmodel import Field, Relationship, UniqueConstraint
+
+from .base import SQLModelBase
+from .mixin import UUIDTableBaseMixin
+
+if TYPE_CHECKING:
+    from .user import User
+
+
+class AuthProviderType(StrEnum):
+    """认证提供者类型"""
+
+    EMAIL_PASSWORD = "email_password"
+    """邮箱+密码"""
+
+    PHONE_SMS = "phone_sms"
+    """手机号+短信验证码（预留）"""
+
+    GITHUB = "github"
+    """GitHub OAuth"""
+
+    QQ = "qq"
+    """QQ OAuth"""
+
+    PASSKEY = "passkey"
+    """Passkey/WebAuthn"""
+
+    MAGIC_LINK = "magic_link"
+    """邮箱 Magic Link"""
+
+
+# ==================== DTO 模型 ====================
+
+class AuthIdentityResponse(SQLModelBase):
+    """认证身份响应 DTO（列表展示用）"""
+
+    id: UUID
+    """身份UUID"""
+
+    provider: AuthProviderType
+    """提供者类型"""
+
+    identifier: str
+    """标识符（邮箱/手机号/OAuth openid）"""
+
+    display_name: str | None = None
+    """显示名称（OAuth 昵称等）"""
+
+    avatar_url: str | None = None
+    """头像 URL"""
+
+    is_primary: bool = False
+    """是否主要身份"""
+
+    is_verified: bool = False
+    """是否已验证"""
+
+
+class BindIdentityRequest(SQLModelBase):
+    """绑定认证身份请求 DTO"""
+
+    provider: AuthProviderType
+    """提供者类型"""
+
+    identifier: str
+    """标识符（邮箱/手机号/OAuth code）"""
+
+    credential: str | None = None
+    """凭证（密码、验证码等）"""
+
+    redirect_uri: str | None = None
+    """OAuth 回调地址"""
+
+
+# ==================== 数据库模型 ====================
+
+class AuthIdentity(SQLModelBase, UUIDTableBaseMixin):
+    """用户认证身份 — 一个用户可以有多种登录方式"""
+
+    __table_args__ = (
+        UniqueConstraint("provider", "identifier", name="uq_auth_identity_provider_identifier"),
+    )
+
+    provider: AuthProviderType = Field(index=True)
+    """提供者类型"""
+
+    identifier: str = Field(max_length=255, index=True)
+    """标识符（邮箱/手机号/OAuth openid）"""
+
+    credential: str | None = Field(default=None, max_length=1024)
+    """凭证（Argon2 哈希密码 / null）"""
+
+    display_name: str | None = Field(default=None, max_length=100)
+    """OAuth 昵称"""
+
+    avatar_url: str | None = Field(default=None, max_length=512)
+    """OAuth 头像 URL"""
+
+    extra_data: str | None = None
+    """JSON 附加数据（2FA secret、OAuth refresh_token 等）"""
+
+    is_primary: bool = False
+    """是否主要身份"""
+
+    is_verified: bool = False
+    """是否已验证"""
+
+    # 外键
+    user_id: UUID = Field(
+        foreign_key="user.id",
+        index=True,
+        ondelete="CASCADE",
+    )
+    """所属用户UUID"""
+
+    # 关系
+    user: "User" = Relationship(back_populates="auth_identities")
+
+    def to_response(self) -> AuthIdentityResponse:
+        """转换为响应 DTO"""
+        return AuthIdentityResponse(
+            id=self.id,
+            provider=self.provider,
+            identifier=self.identifier,
+            display_name=self.display_name,
+            avatar_url=self.avatar_url,
+            is_primary=self.is_primary,
+            is_verified=self.is_verified,
+        )
diff --git a/sqlmodels/migration.py b/sqlmodels/migration.py
index 2a49509..7715265 100644
--- a/sqlmodels/migration.py
+++ b/sqlmodels/migration.py
@@ -28,7 +28,8 @@ default_settings: list[Setting] = [
     Setting(name="siteKeywords", value="网盘，网盘", type=SettingsType.BASIC),
     Setting(name="siteDes", value="DiskNext", type=SettingsType.BASIC),
     Setting(name="siteTitle", value="云星启智", type=SettingsType.BASIC),
-    Setting(name="site_notice", value="", type=SettingsType.BASIC),
+    Setting(name="site_notice_public", value="", type=SettingsType.BASIC),
+    Setting(name="site_notice_user", value="", type=SettingsType.BASIC),
     Setting(name="footer_code", value="", type=SettingsType.BASIC),
     Setting(name="tos_url", value="", type=SettingsType.BASIC),
     Setting(name="privacy_url", value="", type=SettingsType.BASIC),
@@ -58,7 +59,7 @@ default_settings: list[Setting] = [
     Setting(name="login_captcha", value="0", type=SettingsType.LOGIN),
     Setting(name="reg_captcha", value="0", type=SettingsType.LOGIN),
     Setting(name="reg_email_captcha", value="0", type=SettingsType.LOGIN),
-    Setting(name="email_active", value="0", type=SettingsType.REGISTER),
+    Setting(name="require_active", value="0", type=SettingsType.REGISTER),
     Setting(name="mail_activation_template", value="""<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html lang="zh-CN" xmlns="http://www.w3.org/1999/xhtml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:v="urn:schemas-microsoft-com:vml"><head><title>验证码</title><meta charset="UTF-8"><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"><meta content="IE=edge" http-equiv="X-UA-Compatible"><meta content="telephone=no, date=no, address=no, email=no, url=no" name="format-detection"><meta content="width=device-width, initial-scale=1.0" name="viewport"><style>body { margin: 0; padding: 0; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; background-color: #ffffff; }table { border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; }table td { border-collapse: collapse; }img { border: 0; height: auto; line-height: 100%; outline: none; text-decoration: none; -ms-interpolation-mode: bicubic; }body, table, td, p, a, li, blockquote { -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; }@media only screen and (max-width: 480px) {    .mobile-hide { display: none !important; }    .mobile-padding { padding: 20px !important; }    .content-width { width: 100% !important; max-width: 100% !important; }    h1 { font-size: 24px !important; line-height: 1.2 !important; }}</style></head><body style="margin: 0; padding: 0; background-color: #ffffff;"><table border="0" cellpadding="0" cellspacing="0" width="100%" role="presentation"><tr><td align="center" style="background-color: #ffffff; padding-top: 40px; padding-bottom: 40px;"><table align="center" border="0" cellpadding="0" cellspacing="0" class="content-width" style="max-width: 600px; width: 100%; background-color: #ffffff; border: 1px solid #ebebeb; border-radius: 12px; overflow: hidden;"><tr><td class="mobile-padding" style="padding: 40px 40px 30px 40px;"><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td align="left"><a href="{{ site_url }}" target="_blank" style="text-decoration: none;">                                                                                {% if logo_url %}<img src="{{ logo_url }}" alt="{{ site_name }}" width="120" style="display: block; width: 120px; max-width: 100%; border: 0;">                                        {% else %}<span style="font-size: 24px; font-weight: bold; color: #333333;">{{ site_name }}</span>                                        {% endif %}</a></td></tr><tr><td height="30" style="font-size: 1px; line-height: 30px;">&nbsp;</td></tr></table><h1 style="margin: 0; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 24px; font-weight: 700; color: #141414; line-height: 32px;">                            验证您的邮箱</h1><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td height="15" style="font-size: 1px; line-height: 15px;">&nbsp;</td></tr><tr><td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; color: #141414; line-height: 24px;">                                    感谢您注册<strong>{{ site_name }}</strong>，您的验证码是：</td></tr><tr><td height="25" style="font-size: 1px; line-height: 25px;">&nbsp;</td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td align="left"><table border="0" cellpadding="0" cellspacing="0" style="background-color: #f4f7fa; border-radius: 8px;"><tr><td align="center" style="padding: 15px 30px;"><span style="font-family: 'Courier New', Courier, monospace; font-size: 32px; font-weight: 700; color: #0666eb; letter-spacing: 4px; display: block;">                                                    {{ verify_code }}</span></td></tr></table></td></tr><tr><td height="25" style="font-size: 1px; line-height: 25px;">&nbsp;</td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; color: #555555; line-height: 22px;"><p style="margin: 0 0 10px 0;">该验证码<strong>{{ valid_minutes }} 分钟内</strong>有效。</p><p style="margin: 0 0 10px 0; color: #d32f2f;">为保障您的账户安全，请勿将验证码告诉他人。</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td height="30" style="font-size: 1px; line-height: 30px; border-bottom: 1px solid #eeeeee;">&nbsp;</td></tr><tr><td height="20" style="font-size: 1px; line-height: 20px;">&nbsp;</td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 12px; color: #999999; line-height: 18px;"><p style="margin: 0;">此邮件由系统自动发送，请勿直接回复。</p><p style="margin: 5px 0 0 0;">&copy; {{ current_year }} {{ site_name }}. 保留所有权利。</p></td></tr></table></td></tr></table><div style="display:none; white-space:nowrap; font:15px courier; line-height:0;">                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;                 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</div></td></tr></table></body></html>""", type=SettingsType.MAIL_TEMPLATE),
     Setting(name="mail_reset_pwd_template", value="""<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html lang="zh-CN" xmlns="http://www.w3.org/1999/xhtml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:v="urn:schemas-microsoft-com:vml"><head><title>重置密码</title><meta charset="UTF-8"><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"><meta content="IE=edge" http-equiv="X-UA-Compatible"><meta content="telephone=no, date=no, address=no, email=no, url=no" name="format-detection"><meta content="width=device-width, initial-scale=1.0" name="viewport"><style>body { margin: 0; padding: 0; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; background-color: #ffffff; }table { border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; }table td { border-collapse: collapse; }img { border: 0; height: auto; line-height: 100%; outline: none; text-decoration: none; -ms-interpolation-mode: bicubic; }body, table, td, p, a, li, blockquote { -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; }@media only screen and (max-width: 480px) {    .mobile-hide { display: none !important; }    .mobile-padding { padding: 20px !important; }    .content-width { width: 100% !important; max-width: 100% !important; }    h1 { font-size: 24px !important; line-height: 1.2 !important; }}</style></head><body style="margin: 0; padding: 0; background-color: #ffffff;"><table border="0" cellpadding="0" cellspacing="0" width="100%" role="presentation"><tr><td align="center" style="background-color: #ffffff; padding-top: 40px; padding-bottom: 40px;"><table align="center" border="0" cellpadding="0" cellspacing="0" class="content-width" style="max-width: 600px; width: 100%; background-color: #ffffff; border: 1px solid #ebebeb; border-radius: 12px; overflow: hidden;"><tr><td class="mobile-padding" style="padding: 40px 40px 30px 40px;"><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td align="left"><a href="{{ site_url }}" target="_blank" style="text-decoration: none;">                                        {% if logo_url %}<img src="{{ logo_url }}" alt="{{ site_name }}" width="120" style="display: block; width: 120px; max-width: 100%; border: 0;">                                        {% else %}<span style="font-size: 24px; font-weight: bold; color: #333333;">{{ site_name }}</span>                                        {% endif %}</a></td></tr><tr><td height="30" style="font-size: 1px; line-height: 30px;">&nbsp;</td></tr></table><h1 style="margin: 0; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 24px; font-weight: 700; color: #141414; line-height: 32px;">                            重置密码</h1><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td height="15" style="font-size: 1px; line-height: 15px;">&nbsp;</td></tr><tr><td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; color: #141414; line-height: 24px;">                                    您正在申请重置<strong>{{ site_name }}</strong> 的登录密码。若确认是您本人操作，请使用下方验证码：</td></tr><tr><td height="25" style="font-size: 1px; line-height: 25px;">&nbsp;</td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td align="left"><table border="0" cellpadding="0" cellspacing="0" style="background-color: #f4f7fa; border-radius: 8px;"><tr><td align="center" style="padding: 15px 30px;"><span style="font-family: 'Courier New', Courier, monospace; font-size: 32px; font-weight: 700; color: #0666eb; letter-spacing: 4px; display: block;">                                                    {{ verify_code }}</span></td></tr></table></td></tr><tr><td height="25" style="font-size: 1px; line-height: 25px;">&nbsp;</td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; color: #555555; line-height: 22px;"><p style="margin: 0 0 10px 0;">该验证码<strong>{{ valid_minutes }} 分钟内</strong>有效。</p><p style="margin: 0 0 10px 0; color: #666666;">                                        如果您没有请求重置密码，请<strong>忽略此邮件</strong>，您的账户依然安全。</p></td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td height="30" style="font-size: 1px; line-height: 30px; border-bottom: 1px solid #eeeeee;">&nbsp;</td></tr><tr><td height="20" style="font-size: 1px; line-height: 20px;">&nbsp;</td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 12px; color: #999999; line-height: 18px;"><p style="margin: 0;">此邮件由系统自动发送，请勿直接回复。</p><p style="margin: 5px 0 0 0;">&copy; {{ current_year }} {{ site_name }}. 保留所有权利。</p></td></tr></table></td></tr></table><div style="display:none; white-space:nowrap; font:15px courier; line-height:0;">                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;                 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</div></td></tr></table></body></html>""", type=SettingsType.MAIL_TEMPLATE),
     Setting(name="forget_captcha", value="0", type=SettingsType.LOGIN),
@@ -107,6 +108,25 @@ default_settings: list[Setting] = [
     Setting(name="pwa_display", value="standalone", type=SettingsType.PWA),
     Setting(name="pwa_theme_color", value="#000000", type=SettingsType.PWA),
     Setting(name="pwa_background_color", value="#ffffff", type=SettingsType.PWA),
+    # ==================== 认证方式配置 ====================
+    Setting(name="auth_email_password_enabled", value="1", type=SettingsType.AUTH),
+    Setting(name="auth_phone_sms_enabled", value="0", type=SettingsType.AUTH),
+    Setting(name="auth_passkey_enabled", value="0", type=SettingsType.AUTH),
+    Setting(name="auth_magic_link_enabled", value="0", type=SettingsType.AUTH),
+    Setting(name="auth_password_required", value="1", type=SettingsType.AUTH),
+    Setting(name="auth_phone_binding_required", value="0", type=SettingsType.AUTH),
+    Setting(name="auth_email_binding_required", value="1", type=SettingsType.AUTH),
+    # ==================== OAuth 配置 ====================
+    Setting(name="github_enabled", value="0", type=SettingsType.OAUTH),
+    Setting(name="github_client_id", value="", type=SettingsType.OAUTH),
+    Setting(name="github_client_secret", value="", type=SettingsType.OAUTH),
+    Setting(name="qq_enabled", value="0", type=SettingsType.OAUTH),
+    Setting(name="qq_client_id", value="", type=SettingsType.OAUTH),
+    Setting(name="qq_client_secret", value="", type=SettingsType.OAUTH),
+    # ==================== 短信服务配置（预留） ====================
+    Setting(name="sms_provider", value="", type=SettingsType.MOBILE),
+    Setting(name="sms_access_key", value="", type=SettingsType.MOBILE),
+    Setting(name="sms_secret_key", value="", type=SettingsType.MOBILE),
 ]
 
 async def init_default_settings() -> None:
@@ -219,6 +239,7 @@ async def init_default_group() -> None:
             # 游客组不关联存储策略（无法上传）
 
 async def init_default_user() -> None:
+    from .auth_identity import AuthIdentity, AuthProviderType
     from .user import User
     from .group import Group
     from .object import Object, ObjectType
@@ -258,11 +279,20 @@ async def init_default_user() -> None:
                 email="admin@disknext.local",
                 nickname="admin",
                 group_id=admin_group.id,
-                password=hashed_admin_password,
             )
             admin_user_id = admin_user.id  # 在 save 前保存 UUID
             await admin_user.save(session)
 
+            # 创建 AuthIdentity（邮箱密码身份）
+            await AuthIdentity(
+                provider=AuthProviderType.EMAIL_PASSWORD,
+                identifier="admin@disknext.local",
+                credential=hashed_admin_password,
+                is_primary=True,
+                is_verified=True,
+                user_id=admin_user_id,
+            ).save(session)
+
             # 记录默认管理员 ID 到 Setting
             await Setting(
                 name="default_admin_id",
@@ -341,4 +371,4 @@ async def init_default_theme_presets() -> None:
             neutral=NeutralColor.ZINC,
         )
         await default_preset.save(session)
-        log.info('已创建默认主题预设')
\ No newline at end of file
+        log.info('已创建默认主题预设')
diff --git a/sqlmodels/setting.py b/sqlmodels/setting.py
index a0d0a1c..b4375c9 100644
--- a/sqlmodels/setting.py
+++ b/sqlmodels/setting.py
@@ -2,6 +2,7 @@ from enum import StrEnum
 
 from sqlmodel import UniqueConstraint
 
+from .auth_identity import AuthProviderType
 from .base import SQLModelBase
 from .mixin import TableBaseMixin
 from .user import UserResponse
@@ -12,6 +13,19 @@ class CaptchaType(StrEnum):
     GCAPTCHA = "gcaptcha"
     CLOUD_FLARE_TURNSTILE = "cloudflare turnstile"
 
+
+# ==================== Auth 配置 DTO ====================
+
+class AuthMethodConfig(SQLModelBase):
+    """认证方式配置 DTO"""
+
+    provider: AuthProviderType
+    """提供者类型"""
+
+    is_enabled: bool
+    """是否启用"""
+
+
 # ==================== DTO 模型 ====================
 
 class SiteConfigResponse(SQLModelBase):
@@ -50,6 +64,27 @@ class SiteConfigResponse(SQLModelBase):
     captcha_key: str | None = None
     """验证码 public key（DEFAULT 类型时为 None）"""
 
+    auth_methods: list[AuthMethodConfig] = []
+    """可用的登录方式列表"""
+
+    password_required: bool = True
+    """注册时是否必须设置密码"""
+
+    phone_binding_required: bool = False
+    """是否强制绑定手机号"""
+
+    email_binding_required: bool = True
+    """是否强制绑定邮箱"""
+
+    footer_code: str | None = None
+    """自定义页脚代码"""
+
+    tos_url: str | None = None
+    """服务条款 URL"""
+
+    privacy_url: str | None = None
+    """隐私政策 URL"""
+
 
 # ==================== 管理员设置 DTO ====================
 
@@ -133,4 +168,4 @@ class Setting(SettingItem, TableBaseMixin):
     __table_args__ = (UniqueConstraint("type", "name", name="uq_setting_type_name"),)
 
     type: SettingsType
-    """设置类型/分组（覆盖基类的 str 类型为枚举类型）"""
\ No newline at end of file
+    """设置类型/分组（覆盖基类的 str 类型为枚举类型）"""
diff --git a/sqlmodels/user.py b/sqlmodels/user.py
index 437f9b1..9eacde9 100644
--- a/sqlmodels/user.py
+++ b/sqlmodels/user.py
@@ -9,6 +9,7 @@ from sqlmodel import Field, Relationship
 from sqlmodel.ext.asyncio.session import AsyncSession
 from sqlmodel.main import RelationshipInfo
 
+from .auth_identity import AuthProviderType
 from .base import SQLModelBase
 from .color import ChromaticColor, NeutralColor, ThemeColorsBase
 from .model_base import ResponseBase
@@ -17,6 +18,7 @@ from .mixin import UUIDTableBaseMixin, TableViewRequest, ListResponse
 T = TypeVar("T", bound="User")
 
 if TYPE_CHECKING:
+    from .auth_identity import AuthIdentity
     from .group import Group
     from .download import Download
     from .object import Object
@@ -30,7 +32,7 @@ if TYPE_CHECKING:
 
 class AvatarType(StrEnum):
     """头像类型枚举"""
-    
+
     DEFAULT = "default"
     GRAVATAR = "gravatar"
     FILE = "file"
@@ -69,8 +71,8 @@ class UserFilterParams(SQLModelBase):
 class UserBase(SQLModelBase):
     """用户基础字段，供数据库模型和 DTO 共享"""
 
-    email: str
-    """用户邮箱"""
+    email: str | None = None
+    """用户邮箱（社交登录用户可能没有邮箱）"""
 
     status: UserStatus = UserStatus.ACTIVE
     """用户状态"""
@@ -81,30 +83,42 @@ class UserBase(SQLModelBase):
 
 # ==================== DTO 模型 ====================
 
-class LoginRequest(SQLModelBase):
-    """登录请求 DTO"""
+class UnifiedLoginRequest(SQLModelBase):
+    """统一登录请求 DTO"""
 
-    email: str
-    """用户邮箱"""
+    provider: AuthProviderType
+    """登录方式"""
 
-    password: str
-    """用户密码"""
+    identifier: str
+    """标识符（邮箱 / OAuth code / Magic Link token）"""
 
-    captcha: str | None = None
-    """验证码"""
+    credential: str | None = None
+    """凭证（密码，provider=email_password 时必填）"""
 
     two_fa_code: str | None = Field(default=None, min_length=6, max_length=6)
     """两步验证代码"""
 
+    redirect_uri: str | None = None
+    """OAuth 回调地址"""
 
-class RegisterRequest(SQLModelBase):
-    """注册请求 DTO"""
+    captcha: str | None = None
+    """验证码"""
 
-    email: str
-    """用户邮箱，唯一"""
 
-    password: str
-    """用户密码"""
+class UnifiedRegisterRequest(SQLModelBase):
+    """统一注册请求 DTO"""
+
+    provider: AuthProviderType
+    """注册方式（email_password / phone_sms）"""
+
+    identifier: str
+    """标识符（邮箱 / 手机号）"""
+
+    credential: str | None = None
+    """凭证（密码 / 短信验证码）"""
+
+    nickname: str | None = Field(default=None, max_length=50)
+    """昵称"""
 
     captcha: str | None = None
     """验证码"""
@@ -190,7 +204,7 @@ class UserResponse(ResponseBase):
     id: UUID
     """用户UUID"""
 
-    email: str
+    email: str | None = None
     """用户邮箱"""
 
     nickname: str | None = None
@@ -216,10 +230,10 @@ class UserStorageResponse(SQLModelBase):
 
     used: int
     """已用存储空间（字节）"""
-    
+
     free: int
     """剩余存储空间（字节）"""
-    
+
     total: int
     """总存储空间（字节）"""
 
@@ -248,9 +262,6 @@ class UserPublic(UserBase):
     group_name: str | None = None
     """用户组名称"""
 
-    two_factor: str | None = None
-    """两步验证密钥（32位字符串，null 表示未启用）"""
-
     created_at: datetime | None = None
     """创建时间"""
 
@@ -264,21 +275,24 @@ class UserSettingResponse(SQLModelBase):
     id: UUID
     """用户UUID"""
 
-    email: str
+    email: str | None = None
     """用户邮箱"""
 
+    phone: str | None = None
+    """手机号"""
+
     nickname: str | None = None
     """昵称"""
-    
+
     created_at: datetime
     """用户注册时间"""
 
     group_name: str
     """用户所属用户组名称"""
-    
+
     language: str
     """语言偏好"""
-    
+
     timezone: int
     """时区"""
 
@@ -341,16 +355,26 @@ class UserTwoFactorResponse(SQLModelBase):
     """两步验证密钥"""
 
 
+class MagicLinkRequest(SQLModelBase):
+    """Magic Link 请求 DTO"""
+
+    email: str
+    """接收 Magic Link 的邮箱"""
+
+    captcha: str | None = None
+    """验证码"""
+
+
 # ==================== 管理员用户管理 DTO ====================
 
 class UserAdminCreateRequest(SQLModelBase):
     """管理员创建用户请求 DTO"""
 
-    email: str = Field(max_length=50)
+    email: str | None = Field(default=None, max_length=50)
     """用户邮箱"""
 
-    password: str
-    """用户密码（明文，由服务端加密）"""
+    password: str | None = None
+    """用户密码（明文，由服务端加密；为空则不创建邮箱密码身份）"""
 
     nickname: str | None = Field(default=None, max_length=50)
     """昵称"""
@@ -364,15 +388,15 @@ class UserAdminCreateRequest(SQLModelBase):
 
 class UserAdminUpdateRequest(SQLModelBase):
     """管理员更新用户请求 DTO"""
-    
-    email: str = Field(max_length=50)
+
+    email: str | None = Field(default=None, max_length=50)
     """邮箱"""
 
     nickname: str | None = Field(default=None, max_length=50)
     """昵称"""
 
-    password: str | None = None
-    """新密码（为空则不修改）"""
+    phone: str | None = None
+    """手机号"""
 
     group_id: UUID | None = None
     """用户组UUID"""
@@ -389,9 +413,6 @@ class UserAdminUpdateRequest(SQLModelBase):
     group_expires: datetime | None = None
     """用户组过期时间"""
 
-    two_factor: str | None = None
-    """两步验证密钥（32位字符串，传 null 可清除，不传则不修改）"""
-
 
 class UserCalibrateResponse(SQLModelBase):
     """用户存储校准响应 DTO"""
@@ -415,9 +436,6 @@ class UserCalibrateResponse(SQLModelBase):
 class UserAdminDetailResponse(UserPublic):
     """管理员用户详情响应 DTO"""
 
-    two_factor_enabled: bool = False
-    """是否启用两步验证"""
-
     file_count: int = 0
     """文件数量"""
 
@@ -443,14 +461,14 @@ UserSettingResponse.model_rebuild()
 class User(UserBase, UUIDTableBaseMixin):
     """用户模型"""
 
-    email: str = Field(max_length=50, unique=True, index=True)
-    """用户邮箱，唯一"""
+    email: str | None = Field(default=None, max_length=50, unique=True, index=True)
+    """用户邮箱（社交登录用户可能没有邮箱）"""
 
     nickname: str | None = Field(default=None, max_length=50)
     """用于公开展示的名字，可使用真实姓名或昵称"""
 
-    password: str = Field(max_length=255)
-    """用户密码（加密后）"""
+    phone: str | None = Field(default=None, max_length=20, unique=True, index=True)
+    """手机号（预留）"""
 
     status: UserStatus = UserStatus.ACTIVE
     """用户状态"""
@@ -458,9 +476,6 @@ class User(UserBase, UUIDTableBaseMixin):
     storage: int = Field(default=0, sa_column_kwargs={"server_default": "0"}, ge=0)
     """已用存储空间（字节）"""
 
-    two_factor: str | None = Field(default=None, min_length=32, max_length=32)
-    """两步验证密钥"""
-
     avatar: str = Field(default="default", max_length=255)
     """头像地址"""
 
@@ -533,6 +548,12 @@ class User(UserBase, UUIDTableBaseMixin):
         }
     )
 
+    auth_identities: list["AuthIdentity"] = Relationship(
+        back_populates="user",
+        sa_relationship_kwargs={"cascade": "all, delete-orphan"}
+    )
+    """用户的认证身份列表"""
+
     downloads: list["Download"] = Relationship(
         back_populates="user",
         sa_relationship_kwargs={"cascade": "all, delete-orphan"}
@@ -634,4 +655,3 @@ class User(UserBase, UUIDTableBaseMixin):
             filter=filter,
             table_view=table_view,
         )
-    
\ No newline at end of file
diff --git a/tests/conftest.py b/tests/conftest.py
index 574a4ec..e61c162 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -24,6 +24,7 @@ sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')
 
 from main import app
 from sqlmodels.database import get_session
+from sqlmodels.auth_identity import AuthIdentity, AuthProviderType
 from sqlmodels.group import Group, GroupClaims, GroupOptions
 from sqlmodels.migration import migration
 from sqlmodels.object import Object, ObjectType
@@ -192,7 +193,6 @@ async def test_user(db_session: AsyncSession) -> dict[str, str | UUID]:
     user = User(
         email="testuser@test.local",
         nickname="测试用户",
-        password=Password.hash(password),
         status=UserStatus.ACTIVE,
         storage=0,
         score=100,
@@ -200,6 +200,17 @@ async def test_user(db_session: AsyncSession) -> dict[str, str | UUID]:
     )
     user = await user.save(db_session)
 
+    # 创建邮箱密码认证身份
+    identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="testuser@test.local",
+        credential=Password.hash(password),
+        is_primary=True,
+        is_verified=True,
+        user_id=user.id,
+    )
+    await identity.save(db_session)
+
     # 创建用户根目录
     root_folder = Object(
         name="/",
@@ -279,7 +290,6 @@ async def admin_user(db_session: AsyncSession) -> dict[str, str | UUID]:
     admin = User(
         email="admin@disknext.local",
         nickname="管理员",
-        password=Password.hash(password),
         status=UserStatus.ACTIVE,
         storage=0,
         score=9999,
@@ -287,6 +297,17 @@ async def admin_user(db_session: AsyncSession) -> dict[str, str | UUID]:
     )
     admin = await admin.save(db_session)
 
+    # 创建管理员邮箱密码认证身份
+    admin_identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="admin@disknext.local",
+        credential=Password.hash(password),
+        is_primary=True,
+        is_verified=True,
+        user_id=admin.id,
+    )
+    await admin_identity.save(db_session)
+
     # 创建管理员根目录
     root_folder = Object(
         name="/",
diff --git a/tests/fixtures/users.py b/tests/fixtures/users.py
index e4dfa20..0fefd57 100644
--- a/tests/fixtures/users.py
+++ b/tests/fixtures/users.py
@@ -2,12 +2,14 @@
 用户测试数据工厂
 
 提供创建测试用户的便捷方法。
+用户密码凭证通过 AuthIdentity 管理，不再存储在 User 表中。
 """
 from uuid import UUID
 
 from sqlmodel.ext.asyncio.session import AsyncSession
 
-from sqlmodels.user import User
+from sqlmodels.auth_identity import AuthIdentity, AuthProviderType
+from sqlmodels.user import User, UserStatus
 from utils.password.pwd import Password
 
 
@@ -20,7 +22,7 @@ class UserFactory:
         group_id: UUID,
         email: str | None = None,
         password: str | None = None,
-        **kwargs
+        **kwargs,
     ) -> User:
         """
         创建普通用户
@@ -29,7 +31,7 @@ class UserFactory:
             session: 数据库会话
             group_id: 用户组UUID
             email: 用户邮箱（默认: test_user_{随机}@test.local）
-            password: 明文密码（默认: password123）
+            password: 明文密码（默认: password123），若提供则同时创建 AuthIdentity
             **kwargs: 其他用户字段
 
         返回:
@@ -46,12 +48,10 @@ class UserFactory:
         user = User(
             email=email,
             nickname=kwargs.get("nickname", email),
-            password=Password.hash(password),
-            status=kwargs.get("status", True),
+            status=kwargs.get("status", UserStatus.ACTIVE),
             storage=kwargs.get("storage", 0),
             score=kwargs.get("score", 100),
             group_id=group_id,
-            two_factor=kwargs.get("two_factor"),
             avatar=kwargs.get("avatar", "default"),
             group_expires=kwargs.get("group_expires"),
             theme=kwargs.get("theme", "system"),
@@ -61,6 +61,18 @@ class UserFactory:
         )
 
         user = await user.save(session)
+
+        # 创建邮箱密码认证身份
+        identity = AuthIdentity(
+            provider=AuthProviderType.EMAIL_PASSWORD,
+            identifier=email,
+            credential=Password.hash(password),
+            is_primary=True,
+            is_verified=True,
+            user_id=user.id,
+        )
+        await identity.save(session)
+
         return user
 
     @staticmethod
@@ -68,7 +80,7 @@ class UserFactory:
         session: AsyncSession,
         admin_group_id: UUID,
         email: str | None = None,
-        password: str | None = None
+        password: str | None = None,
     ) -> User:
         """
         创建管理员用户
@@ -93,8 +105,7 @@ class UserFactory:
         admin = User(
             email=email,
             nickname=f"管理员 {email}",
-            password=Password.hash(password),
-            status=True,
+            status=UserStatus.ACTIVE,
             storage=0,
             score=9999,
             group_id=admin_group_id,
@@ -102,13 +113,25 @@ class UserFactory:
         )
 
         admin = await admin.save(session)
+
+        # 创建邮箱密码认证身份
+        identity = AuthIdentity(
+            provider=AuthProviderType.EMAIL_PASSWORD,
+            identifier=email,
+            credential=Password.hash(password),
+            is_primary=True,
+            is_verified=True,
+            user_id=admin.id,
+        )
+        await identity.save(session)
+
         return admin
 
     @staticmethod
     async def create_banned(
         session: AsyncSession,
         group_id: UUID,
-        email: str | None = None
+        email: str | None = None,
     ) -> User:
         """
         创建被封禁用户
@@ -129,8 +152,7 @@ class UserFactory:
         banned_user = User(
             email=email,
             nickname=f"封禁用户 {email}",
-            password=Password.hash("banned_password"),
-            status=False,  # 封禁状态
+            status=UserStatus.ADMIN_BANNED,
             storage=0,
             score=0,
             group_id=group_id,
@@ -138,6 +160,18 @@ class UserFactory:
         )
 
         banned_user = await banned_user.save(session)
+
+        # 创建邮箱密码认证身份
+        identity = AuthIdentity(
+            provider=AuthProviderType.EMAIL_PASSWORD,
+            identifier=email,
+            credential=Password.hash("banned_password"),
+            is_primary=True,
+            is_verified=True,
+            user_id=banned_user.id,
+        )
+        await identity.save(session)
+
         return banned_user
 
     @staticmethod
@@ -145,7 +179,7 @@ class UserFactory:
         session: AsyncSession,
         group_id: UUID,
         storage_bytes: int,
-        email: str | None = None
+        email: str | None = None,
     ) -> User:
         """
         创建已使用指定存储空间的用户
@@ -167,8 +201,7 @@ class UserFactory:
         user = User(
             email=email,
             nickname=email,
-            password=Password.hash("password123"),
-            status=True,
+            status=UserStatus.ACTIVE,
             storage=storage_bytes,
             score=100,
             group_id=group_id,
@@ -176,4 +209,16 @@ class UserFactory:
         )
 
         user = await user.save(session)
+
+        # 创建邮箱密码认证身份
+        identity = AuthIdentity(
+            provider=AuthProviderType.EMAIL_PASSWORD,
+            identifier=email,
+            credential=Password.hash("password123"),
+            is_primary=True,
+            is_verified=True,
+            user_id=user.id,
+        )
+        await identity.save(session)
+
         return user
diff --git a/tests/integration/api/test_site.py b/tests/integration/api/test_site.py
index ccb6b6f..62b10ac 100644
--- a/tests/integration/api/test_site.py
+++ b/tests/integration/api/test_site.py
@@ -83,6 +83,24 @@ async def test_site_config_captcha_settings(async_client: AsyncClient):
     assert "forgetCaptcha" in config
 
 
+@pytest.mark.asyncio
+async def test_site_config_auth_methods(async_client: AsyncClient):
+    """测试配置包含认证方式列表"""
+    response = await async_client.get("/api/site/config")
+    assert response.status_code == 200
+
+    data = response.json()
+    config = data["data"]
+    assert "authMethods" in config
+    assert isinstance(config["authMethods"], list)
+    assert len(config["authMethods"]) > 0
+
+    # 每个认证方式应包含 provider 和 isEnabled
+    for method in config["authMethods"]:
+        assert "provider" in method
+        assert "isEnabled" in method
+
+
 @pytest.mark.asyncio
 async def test_site_captcha_endpoint_exists(async_client: AsyncClient):
     """测试验证码端点存在（即使未实现也应返回有效响应）"""
diff --git a/tests/integration/api/test_user.py b/tests/integration/api/test_user.py
index c851a8d..7eb234f 100644
--- a/tests/integration/api/test_user.py
+++ b/tests/integration/api/test_user.py
@@ -15,9 +15,10 @@ async def test_user_login_success(
     """测试成功登录"""
     response = await async_client.post(
         "/api/user/session",
-        data={
-            "username": test_user_info["email"],
-            "password": test_user_info["password"],
+        json={
+            "provider": "email_password",
+            "identifier": test_user_info["email"],
+            "credential": test_user_info["password"],
         }
     )
     assert response.status_code == 200
@@ -37,9 +38,10 @@ async def test_user_login_wrong_password(
     """测试密码错误返回 401"""
     response = await async_client.post(
         "/api/user/session",
-        data={
-            "username": test_user_info["email"],
-            "password": "wrongpassword",
+        json={
+            "provider": "email_password",
+            "identifier": test_user_info["email"],
+            "credential": "wrongpassword",
         }
     )
     assert response.status_code == 401
@@ -50,9 +52,10 @@ async def test_user_login_nonexistent_user(async_client: AsyncClient):
     """测试不存在的用户返回 401"""
     response = await async_client.post(
         "/api/user/session",
-        data={
-            "username": "nonexistent@test.local",
-            "password": "anypassword",
+        json={
+            "provider": "email_password",
+            "identifier": "nonexistent@test.local",
+            "credential": "anypassword",
         }
     )
     assert response.status_code == 401
@@ -66,9 +69,10 @@ async def test_user_login_user_banned(
     """测试封禁用户返回 403"""
     response = await async_client.post(
         "/api/user/session",
-        data={
-            "username": banned_user_info["email"],
-            "password": banned_user_info["password"],
+        json={
+            "provider": "email_password",
+            "identifier": banned_user_info["email"],
+            "credential": banned_user_info["password"],
         }
     )
     assert response.status_code == 403
@@ -82,8 +86,9 @@ async def test_user_register_success(async_client: AsyncClient):
     response = await async_client.post(
         "/api/user/",
         json={
-            "email": "newuser@test.local",
-            "password": "newpass123",
+            "provider": "email_password",
+            "identifier": "newuser@test.local",
+            "credential": "newpass123",
         }
     )
     assert response.status_code == 200
@@ -104,8 +109,9 @@ async def test_user_register_duplicate_email(
     response = await async_client.post(
         "/api/user/",
         json={
-            "email": test_user_info["email"],
-            "password": "anypassword",
+            "provider": "email_password",
+            "identifier": test_user_info["email"],
+            "credential": "anypassword",
         }
     )
     assert response.status_code == 400
diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py
index 360b1e0..bd907f9 100644
--- a/tests/integration/conftest.py
+++ b/tests/integration/conftest.py
@@ -23,6 +23,7 @@ sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '../.
 
 from main import app
 from sqlmodels import Group, GroupClaims, GroupOptions, Object, ObjectType, Policy, PolicyType, Setting, SettingsType, User
+from sqlmodels.auth_identity import AuthIdentity, AuthProviderType
 from sqlmodels.user import UserStatus
 from utils import Password
 from utils.JWT import create_access_token
@@ -98,6 +99,15 @@ async def initialized_db(test_session: AsyncSession) -> AsyncSession:
         Setting(type=SettingsType.CAPTCHA, name="captcha_CloudflareKey", value=""),
         Setting(type=SettingsType.REGISTER, name="register_enabled", value="1"),
         Setting(type=SettingsType.AUTH, name="secret_key", value="test_secret_key_for_jwt_token_generation"),
+        Setting(type=SettingsType.AUTH, name="auth_email_password_enabled", value="1"),
+        Setting(type=SettingsType.AUTH, name="auth_phone_sms_enabled", value="0"),
+        Setting(type=SettingsType.AUTH, name="auth_passkey_enabled", value="0"),
+        Setting(type=SettingsType.AUTH, name="auth_magic_link_enabled", value="0"),
+        Setting(type=SettingsType.AUTH, name="auth_password_required", value="1"),
+        Setting(type=SettingsType.AUTH, name="auth_phone_binding_required", value="0"),
+        Setting(type=SettingsType.AUTH, name="auth_email_binding_required", value="1"),
+        Setting(type=SettingsType.OAUTH, name="github_enabled", value="0"),
+        Setting(type=SettingsType.OAUTH, name="qq_enabled", value="0"),
     ]
     for setting in settings:
         test_session.add(setting)
@@ -183,7 +193,6 @@ async def initialized_db(test_session: AsyncSession) -> AsyncSession:
     test_user = User(
         id=uuid4(),
         email="testuser@test.local",
-        password=Password.hash("testpass123"),
         nickname="测试用户",
         status=UserStatus.ACTIVE,
         storage=0,
@@ -196,7 +205,6 @@ async def initialized_db(test_session: AsyncSession) -> AsyncSession:
     admin_user = User(
         id=uuid4(),
         email="admin@disknext.local",
-        password=Password.hash("adminpass123"),
         nickname="管理员",
         status=UserStatus.ACTIVE,
         storage=0,
@@ -209,7 +217,6 @@ async def initialized_db(test_session: AsyncSession) -> AsyncSession:
     banned_user = User(
         id=uuid4(),
         email="banneduser@test.local",
-        password=Password.hash("banned123"),
         nickname="封禁用户",
         status=UserStatus.ADMIN_BANNED,
         storage=0,
@@ -226,7 +233,40 @@ async def initialized_db(test_session: AsyncSession) -> AsyncSession:
     await test_session.refresh(admin_user)
     await test_session.refresh(banned_user)
 
-    # 7. 创建用户根目录
+    # 7. 创建认证身份
+    test_user_identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="testuser@test.local",
+        credential=Password.hash("testpass123"),
+        is_primary=True,
+        is_verified=True,
+        user_id=test_user.id,
+    )
+    test_session.add(test_user_identity)
+
+    admin_user_identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="admin@disknext.local",
+        credential=Password.hash("adminpass123"),
+        is_primary=True,
+        is_verified=True,
+        user_id=admin_user.id,
+    )
+    test_session.add(admin_user_identity)
+
+    banned_user_identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="banneduser@test.local",
+        credential=Password.hash("banned123"),
+        is_primary=True,
+        is_verified=True,
+        user_id=banned_user.id,
+    )
+    test_session.add(banned_user_identity)
+
+    await test_session.commit()
+
+    # 8. 创建用户根目录
     test_user_root = Object(
         id=uuid4(),
         name="/",
@@ -251,7 +291,7 @@ async def initialized_db(test_session: AsyncSession) -> AsyncSession:
 
     await test_session.commit()
 
-    # 8. 设置JWT密钥（从数据库加载）
+    # 9. 设置JWT密钥（从数据库加载）
     JWT.SECRET_KEY = "test_secret_key_for_jwt_token_generation"
 
     # 刷新 group options
diff --git a/tests/test_db_user.py b/tests/test_db_user.py
index 0b6a728..aaefa49 100644
--- a/tests/test_db_user.py
+++ b/tests/test_db_user.py
@@ -18,7 +18,6 @@ async def test_user_curd():
 
         test_user = User(
             email='test_user@test.local',
-            password='test_password',
             group_id=created_group.id
         )
 
@@ -28,7 +27,6 @@ async def test_user_curd():
         # 验证用户是否存在
         assert created_user.id is not None
         assert created_user.email == 'test_user@test.local'
-        assert created_user.password == 'test_password'
         assert created_user.group_id == created_group.id
 
         # 测试查 Read
@@ -36,18 +34,16 @@ async def test_user_curd():
 
         assert fetched_user is not None
         assert fetched_user.email == 'test_user@test.local'
-        assert fetched_user.password == 'test_password'
         assert fetched_user.group_id == created_group.id
 
         # 测试改 Update
         updated_user = await fetched_user.update(
             session,
-            {"email": "updated_user@test.local", "password": "updated_password"}
+            {"email": "updated_user@test.local"}
         )
 
         assert updated_user is not None
         assert updated_user.email == 'updated_user@test.local'
-        assert updated_user.password == 'updated_password'
 
         # 测试删除 Delete
         await updated_user.delete(session)
diff --git a/tests/unit/models/test_object.py b/tests/unit/models/test_object.py
index 928b95f..16a9bca 100644
--- a/tests/unit/models/test_object.py
+++ b/tests/unit/models/test_object.py
@@ -19,7 +19,7 @@ async def test_object_create_folder(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="testuser", password="password", group_id=group.id)
+    user = User(email="testuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(
@@ -53,7 +53,7 @@ async def test_object_create_file(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="testuser", password="password", group_id=group.id)
+    user = User(email="testuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(
@@ -98,7 +98,7 @@ async def test_object_is_file_property(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="testuser", password="password", group_id=group.id)
+    user = User(email="testuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -125,7 +125,7 @@ async def test_object_is_folder_property(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="testuser", password="password", group_id=group.id)
+    user = User(email="testuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -151,7 +151,7 @@ async def test_object_get_root(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="rootuser", password="password", group_id=group.id)
+    user = User(email="rootuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -183,7 +183,7 @@ async def test_object_get_by_path_root(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="pathuser", password="password", group_id=group.id)
+    user = User(email="pathuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -214,7 +214,7 @@ async def test_object_get_by_path_nested(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="nesteduser", password="password", group_id=group.id)
+    user = User(email="nesteduser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -277,7 +277,7 @@ async def test_object_get_by_path_not_found(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="notfounduser", password="password", group_id=group.id)
+    user = User(email="notfounduser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -311,7 +311,7 @@ async def test_object_get_children(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="childrenuser", password="password", group_id=group.id)
+    user = User(email="childrenuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -363,7 +363,7 @@ async def test_object_parent_child_relationship(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="reluser", password="password", group_id=group.id)
+    user = User(email="reluser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -408,7 +408,7 @@ async def test_object_unique_constraint(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="uniqueuser", password="password", group_id=group.id)
+    user = User(email="uniqueuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
@@ -456,7 +456,7 @@ async def test_object_get_full_path(db_session: AsyncSession):
     group = Group(name="测试组")
     group = await group.save(db_session)
 
-    user = User(email="pathuser", password="password", group_id=group.id)
+    user = User(email="pathuser", group_id=group.id)
     user = await user.save(db_session)
 
     policy = Policy(name="本地策略", type=PolicyType.LOCAL, server="/tmp/test")
diff --git a/tests/unit/models/test_user.py b/tests/unit/models/test_user.py
index c490fc0..01b419e 100644
--- a/tests/unit/models/test_user.py
+++ b/tests/unit/models/test_user.py
@@ -20,7 +20,6 @@ async def test_user_create(db_session: AsyncSession):
     user = User(
         email="testuser@test.local",
         nickname="测试用户",
-        password="hashed_password",
         group_id=group.id
     )
     user = await user.save(db_session)
@@ -43,7 +42,6 @@ async def test_user_unique_email(db_session: AsyncSession):
     # 创建第一个用户
     user1 = User(
         email="duplicate@test.local",
-        password="password1",
         group_id=group.id
     )
     await user1.save(db_session)
@@ -51,7 +49,6 @@ async def test_user_unique_email(db_session: AsyncSession):
     # 尝试创建同名用户
     user2 = User(
         email="duplicate@test.local",
-        password="password2",
         group_id=group.id
     )
 
@@ -70,7 +67,6 @@ async def test_user_to_public(db_session: AsyncSession):
     user = User(
         email="publicuser@test.local",
         nickname="公开用户",
-        password="secret_password",
         storage=1024,
         avatar="avatar.jpg",
         group_id=group.id
@@ -88,8 +84,6 @@ async def test_user_to_public(db_session: AsyncSession):
     # 这是已知的设计问题，需要在 UserPublic 中添加别名或重命名字段
     assert public_user.nick is None  # 实际行为
     assert public_user.storage == 1024
-    # 密码不应该在公开数据中
-    assert not hasattr(public_user, 'password')
 
 
 @pytest.mark.asyncio
@@ -102,7 +96,6 @@ async def test_user_group_relationship(db_session: AsyncSession):
     # 创建用户
     user = User(
         email="vipuser@test.local",
-        password="password",
         group_id=group.id
     )
     user = await user.save(db_session)
@@ -126,7 +119,6 @@ async def test_user_status_default(db_session: AsyncSession):
 
     user = User(
         email="defaultuser@test.local",
-        password="password",
         group_id=group.id
     )
     user = await user.save(db_session)
@@ -142,7 +134,6 @@ async def test_user_storage_default(db_session: AsyncSession):
 
     user = User(
         email="storageuser@test.local",
-        password="password",
         group_id=group.id
     )
     user = await user.save(db_session)
@@ -159,7 +150,6 @@ async def test_user_theme_enum(db_session: AsyncSession):
     # 测试默认值
     user1 = User(
         email="user1@test.local",
-        password="password",
         group_id=group.id
     )
     user1 = await user1.save(db_session)
@@ -168,7 +158,6 @@ async def test_user_theme_enum(db_session: AsyncSession):
     # 测试设置为 LIGHT
     user2 = User(
         email="user2@test.local",
-        password="password",
         theme=ThemeType.LIGHT,
         group_id=group.id
     )
@@ -178,9 +167,40 @@ async def test_user_theme_enum(db_session: AsyncSession):
     # 测试设置为 DARK
     user3 = User(
         email="user3@test.local",
-        password="password",
         theme=ThemeType.DARK,
         group_id=group.id
     )
     user3 = await user3.save(db_session)
     assert user3.theme == ThemeType.DARK
+
+
+@pytest.mark.asyncio
+async def test_user_email_optional(db_session: AsyncSession):
+    """测试 email 可以为空（支持社交登录用户）"""
+    group = Group(name="默认组")
+    group = await group.save(db_session)
+
+    user = User(
+        nickname="社交用户",
+        group_id=group.id
+    )
+    user = await user.save(db_session)
+
+    assert user.id is not None
+    assert user.email is None
+
+
+@pytest.mark.asyncio
+async def test_user_phone_field(db_session: AsyncSession):
+    """测试 phone 字段"""
+    group = Group(name="默认组")
+    group = await group.save(db_session)
+
+    user = User(
+        email="phoneuser@test.local",
+        phone="13800138000",
+        group_id=group.id
+    )
+    user = await user.save(db_session)
+
+    assert user.phone == "13800138000"
diff --git a/tests/unit/service/test_login.py b/tests/unit/service/test_login.py
index 9270f77..821569e 100644
--- a/tests/unit/service/test_login.py
+++ b/tests/unit/service/test_login.py
@@ -1,78 +1,154 @@
 """
 Login 服务的单元测试
+
+测试 unified_login() 各 provider 路径。
 """
 import pytest
+from fastapi import HTTPException
 from sqlmodel.ext.asyncio.session import AsyncSession
 
-from sqlmodels.user import User, LoginRequest, TokenResponse, UserStatus
-from sqlmodels.group import Group
-from service.user.login import login
+from sqlmodels.auth_identity import AuthIdentity, AuthProviderType
+from sqlmodels.setting import Setting, SettingsType
+from sqlmodels.user import User, UnifiedLoginRequest, TokenResponse, UserStatus
+from sqlmodels.group import Group, GroupOptions
+from service.user.login import unified_login
 from utils.password.pwd import Password
 
 
 @pytest.fixture
-async def setup_user(db_session: AsyncSession):
-    """创建测试用户"""
+async def setup_auth_settings(db_session: AsyncSession):
+    """创建认证相关的 Setting 配置"""
+    settings = [
+        Setting(type=SettingsType.AUTH, name="auth_email_password_enabled", value="1"),
+        Setting(type=SettingsType.AUTH, name="auth_phone_sms_enabled", value="0"),
+        Setting(type=SettingsType.AUTH, name="auth_passkey_enabled", value="0"),
+        Setting(type=SettingsType.AUTH, name="auth_magic_link_enabled", value="0"),
+        Setting(type=SettingsType.OAUTH, name="github_enabled", value="0"),
+        Setting(type=SettingsType.OAUTH, name="qq_enabled", value="0"),
+    ]
+    for s in settings:
+        await s.save(db_session)
+
+
+@pytest.fixture
+async def setup_user(db_session: AsyncSession, setup_auth_settings):
+    """创建测试用户和邮箱密码认证身份"""
     # 创建用户组
     group = Group(name="测试组")
     group = await group.save(db_session)
 
+    # 创建用户组选项
+    group_options = GroupOptions(
+        group_id=group.id,
+        share_download=True,
+        share_free=False,
+        relocate=False,
+    )
+    await group_options.save(db_session)
+
     # 创建正常用户
     plain_password = "secure_password_123"
     user = User(
         email="loginuser@test.local",
-        password=Password.hash(plain_password),
         status=UserStatus.ACTIVE,
-        group_id=group.id
+        group_id=group.id,
     )
     user = await user.save(db_session)
 
+    # 创建邮箱密码认证身份
+    identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="loginuser@test.local",
+        credential=Password.hash(plain_password),
+        is_primary=True,
+        is_verified=True,
+        user_id=user.id,
+    )
+    await identity.save(db_session)
+
     return {
         "user": user,
         "password": plain_password,
-        "group_id": group.id
+        "group_id": group.id,
     }
 
 
 @pytest.fixture
-async def setup_banned_user(db_session: AsyncSession):
+async def setup_banned_user(db_session: AsyncSession, setup_auth_settings):
     """创建被封禁的用户"""
     group = Group(name="测试组2")
     group = await group.save(db_session)
 
+    group_options = GroupOptions(
+        group_id=group.id,
+        share_download=True,
+        share_free=False,
+        relocate=False,
+    )
+    await group_options.save(db_session)
+
     user = User(
         email="banneduser@test.local",
-        password=Password.hash("password"),
-        status=UserStatus.ADMIN_BANNED,  # 封禁状态
-        group_id=group.id
+        status=UserStatus.ADMIN_BANNED,
+        group_id=group.id,
     )
     user = await user.save(db_session)
 
+    identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="banneduser@test.local",
+        credential=Password.hash("password"),
+        is_primary=True,
+        is_verified=True,
+        user_id=user.id,
+    )
+    await identity.save(db_session)
+
     return user
 
 
 @pytest.fixture
-async def setup_2fa_user(db_session: AsyncSession):
+async def setup_2fa_user(db_session: AsyncSession, setup_auth_settings):
     """创建启用了两步验证的用户"""
     import pyotp
 
     group = Group(name="测试组3")
     group = await group.save(db_session)
 
+    group_options = GroupOptions(
+        group_id=group.id,
+        share_download=True,
+        share_free=False,
+        relocate=False,
+    )
+    await group_options.save(db_session)
+
     secret = pyotp.random_base32()
     user = User(
         email="2fauser@test.local",
-        password=Password.hash("password"),
         status=UserStatus.ACTIVE,
-        two_factor=secret,
-        group_id=group.id
+        group_id=group.id,
     )
     user = await user.save(db_session)
 
+    # 创建带 2FA secret 的邮箱密码认证身份
+    import orjson
+    extra_data = orjson.dumps({"two_factor": secret}).decode('utf-8')
+    identity = AuthIdentity(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="2fauser@test.local",
+        credential=Password.hash("password"),
+        extra_data=extra_data,
+        is_primary=True,
+        is_verified=True,
+        user_id=user.id,
+    )
+    await identity.save(db_session)
+
     return {
         "user": user,
         "secret": secret,
-        "password": "password"
+        "password": "password",
     }
 
 
@@ -81,12 +157,13 @@ async def test_login_success(db_session: AsyncSession, setup_user):
     """测试正常登录"""
     user_data = setup_user
 
-    login_request = LoginRequest(
-        email="loginuser@test.local",
-        password=user_data["password"]
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="loginuser@test.local",
+        credential=user_data["password"],
     )
 
-    result = await login(db_session, login_request)
+    result = await unified_login(db_session, request)
 
     assert isinstance(result, TokenResponse)
     assert result.access_token is not None
@@ -96,42 +173,48 @@ async def test_login_success(db_session: AsyncSession, setup_user):
 
 
 @pytest.mark.asyncio
-async def test_login_user_not_found(db_session: AsyncSession):
+async def test_login_user_not_found(db_session: AsyncSession, setup_user):
     """测试用户不存在"""
-    login_request = LoginRequest(
-        email="nonexistent@test.local",
-        password="any_password"
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="nonexistent@test.local",
+        credential="any_password",
     )
 
-    result = await login(db_session, login_request)
+    with pytest.raises(HTTPException) as exc_info:
+        await unified_login(db_session, request)
 
-    assert result is None
+    assert exc_info.value.status_code == 401
 
 
 @pytest.mark.asyncio
 async def test_login_wrong_password(db_session: AsyncSession, setup_user):
     """测试密码错误"""
-    login_request = LoginRequest(
-        email="loginuser@test.local",
-        password="wrong_password"
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="loginuser@test.local",
+        credential="wrong_password",
     )
 
-    result = await login(db_session, login_request)
+    with pytest.raises(HTTPException) as exc_info:
+        await unified_login(db_session, request)
 
-    assert result is None
+    assert exc_info.value.status_code == 401
 
 
 @pytest.mark.asyncio
 async def test_login_user_banned(db_session: AsyncSession, setup_banned_user):
     """测试用户被封禁"""
-    login_request = LoginRequest(
-        email="banneduser@test.local",
-        password="password"
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="banneduser@test.local",
+        credential="password",
     )
 
-    result = await login(db_session, login_request)
+    with pytest.raises(HTTPException) as exc_info:
+        await unified_login(db_session, request)
 
-    assert result is False
+    assert exc_info.value.status_code == 403
 
 
 @pytest.mark.asyncio
@@ -139,15 +222,17 @@ async def test_login_2fa_required(db_session: AsyncSession, setup_2fa_user):
     """测试需要 2FA"""
     user_data = setup_2fa_user
 
-    login_request = LoginRequest(
-        email="2fauser@test.local",
-        password=user_data["password"]
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="2fauser@test.local",
+        credential=user_data["password"],
         # 未提供 two_fa_code
     )
 
-    result = await login(db_session, login_request)
+    with pytest.raises(HTTPException) as exc_info:
+        await unified_login(db_session, request)
 
-    assert result == "2fa_required"
+    assert exc_info.value.status_code == 428
 
 
 @pytest.mark.asyncio
@@ -155,15 +240,17 @@ async def test_login_2fa_invalid(db_session: AsyncSession, setup_2fa_user):
     """测试 2FA 错误"""
     user_data = setup_2fa_user
 
-    login_request = LoginRequest(
-        email="2fauser@test.local",
-        password=user_data["password"],
-        two_fa_code="000000"  # 错误的验证码
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="2fauser@test.local",
+        credential=user_data["password"],
+        two_fa_code="000000",
     )
 
-    result = await login(db_session, login_request)
+    with pytest.raises(HTTPException) as exc_info:
+        await unified_login(db_session, request)
 
-    assert result == "2fa_invalid"
+    assert exc_info.value.status_code == 401
 
 
 @pytest.mark.asyncio
@@ -178,56 +265,44 @@ async def test_login_2fa_success(db_session: AsyncSession, setup_2fa_user):
     totp = pyotp.TOTP(secret)
     valid_code = totp.now()
 
-    login_request = LoginRequest(
-        email="2fauser@test.local",
-        password=user_data["password"],
-        two_fa_code=valid_code
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="2fauser@test.local",
+        credential=user_data["password"],
+        two_fa_code=valid_code,
     )
 
-    result = await login(db_session, login_request)
+    result = await unified_login(db_session, request)
 
     assert isinstance(result, TokenResponse)
     assert result.access_token is not None
 
 
 @pytest.mark.asyncio
-async def test_login_returns_valid_tokens(db_session: AsyncSession, setup_user):
-    """测试返回的令牌可以被解码"""
-    import jwt as pyjwt
-
-    user_data = setup_user
-
-    login_request = LoginRequest(
-        email="loginuser@test.local",
-        password=user_data["password"]
+async def test_login_provider_disabled(db_session: AsyncSession, setup_user):
+    """测试未启用的 provider"""
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.PHONE_SMS,
+        identifier="13800138000",
+        credential="123456",
     )
 
-    result = await login(db_session, login_request)
+    with pytest.raises(HTTPException) as exc_info:
+        await unified_login(db_session, request)
 
-    assert isinstance(result, TokenResponse)
-
-    # 注意: 实际项目中需要使用正确的 SECRET_KEY
-    # 这里假设测试环境已经设置了 SECRET_KEY
-    # decoded = pyjwt.decode(
-    #     result.access_token,
-    #     SECRET_KEY,
-    #     algorithms=["HS256"]
-    # )
-    # assert decoded["sub"] == "loginuser"
+    assert exc_info.value.status_code == 400
 
 
 @pytest.mark.asyncio
-async def test_login_case_sensitive_email(db_session: AsyncSession, setup_user):
-    """测试邮箱大小写敏感"""
-    user_data = setup_user
-
-    # 使用大写邮箱登录
-    login_request = LoginRequest(
-        email="LOGINUSER@TEST.LOCAL",
-        password=user_data["password"]
+async def test_login_missing_password(db_session: AsyncSession, setup_user):
+    """测试邮箱密码登录缺少密码"""
+    request = UnifiedLoginRequest(
+        provider=AuthProviderType.EMAIL_PASSWORD,
+        identifier="loginuser@test.local",
+        # 未提供 credential
     )
 
-    result = await login(db_session, login_request)
+    with pytest.raises(HTTPException) as exc_info:
+        await unified_login(db_session, request)
 
-    # 应该失败，因为邮箱大小写不匹配
-    assert result is None
+    assert exc_info.value.status_code == 400