diff --git a/app/auth.py b/app/auth.py
index 67ce706..669537b 100644
--- a/app/auth.py
+++ b/app/auth.py
@@ -317,13 +317,51 @@ def totp_redis_key(user: User) -> str:
     return f"totp:setup:{user.email}"
 
 
+def _generate_totp_account_label(user: User) -> str:
+    """生成TOTP账户标签
+
+    根据配置选择使用用户名或邮箱，并添加服务器信息使标签更具描述性
+    """
+    if settings.totp_use_username_in_label:
+        # 使用用户名作为主要标识
+        primary_identifier = user.username
+    else:
+        # 使用邮箱作为标识
+        primary_identifier = user.email
+
+    # 如果配置了服务名称，添加到标签中以便在认证器中区分
+    if settings.totp_service_name:
+        return f"{primary_identifier} ({settings.totp_service_name})"
+    else:
+        return primary_identifier
+
+
+def _generate_totp_issuer_name() -> str:
+    """生成TOTP发行者名称
+
+    优先使用自定义的totp_issuer，否则使用服务名称
+    """
+    if settings.totp_issuer:
+        return settings.totp_issuer
+    elif settings.totp_service_name:
+        return settings.totp_service_name
+    else:
+        # 回退到默认值
+        return "osu! Private Server"
+
+
 async def start_create_totp_key(user: User, redis: Redis) -> StartCreateTotpKeyResp:
     secret = pyotp.random_base32()
     await redis.hset(totp_redis_key(user), mapping={"secret": secret, "fails": 0})  # pyright: ignore[reportGeneralTypeIssues]
     await redis.expire(totp_redis_key(user), 300)
+
+    # 生成更完整的账户标签和issuer信息
+    account_label = _generate_totp_account_label(user)
+    issuer_name = _generate_totp_issuer_name()
+
     return StartCreateTotpKeyResp(
         secret=secret,
-        uri=pyotp.totp.TOTP(secret).provisioning_uri(name=user.email, issuer_name=settings.totp_issuer),
+        uri=pyotp.totp.TOTP(secret).provisioning_uri(name=account_label, issuer_name=issuer_name),
     )
 
 
diff --git a/app/config.py b/app/config.py
index 1805976..cf1107e 100644
--- a/app/config.py
+++ b/app/config.py
@@ -304,6 +304,16 @@ STORAGE_SETTINGS='{
         Field(default=None, description="TOTP 认证器中的发行者名称"),
         "验证服务设置",
     ]
+    totp_service_name: Annotated[
+        str,
+        Field(default="g0v0! Lazer Server", description="TOTP 认证器中显示的服务名称"),
+        "验证服务设置",
+    ]
+    totp_use_username_in_label: Annotated[
+        bool,
+        Field(default=True, description="在TOTP标签中使用用户名而不是邮箱"),
+        "验证服务设置",
+    ]
     enable_email_verification: Annotated[
         bool,
         Field(default=False, description="是否启用邮件验证功能"),
@@ -314,6 +324,11 @@ STORAGE_SETTINGS='{
         Field(default=True, description="是否启用智能验证（基于客户端类型和设备信任）"),
         "验证服务设置",
     ]
+    enable_session_verification: Annotated[
+        bool,
+        Field(default=True, description="是否启用会话验证中间件"),
+        "验证服务设置",
+    ]
     enable_multi_device_login: Annotated[
         bool,
         Field(default=True, description="是否允许多设备同时登录"),
diff --git a/app/database/verification.py b/app/database/verification.py
index 52a42d7..f5b9e32 100644
--- a/app/database/verification.py
+++ b/app/database/verification.py
@@ -49,5 +49,7 @@ class LoginSession(SQLModel, table=True):
     verified_at: datetime | None = Field(default=None)
     expires_at: datetime = Field()  # 会话过期时间
     is_new_location: bool = Field(default=False)  # 是否新位置登录
+    session_token: str | None = Field(default=None, max_length=64, index=True)  # 会话令牌
+    verification_method: str | None = Field(default=None, max_length=20)  # 验证方法 (totp/mail)
 
     token: Optional["OAuthToken"] = Relationship(back_populates="login_session")
diff --git a/app/interfaces/session_verification.py b/app/interfaces/session_verification.py
new file mode 100644
index 0000000..878274f
--- /dev/null
+++ b/app/interfaces/session_verification.py
@@ -0,0 +1,74 @@
+"""
+会话验证接口
+
+基于osu-web的SessionVerificationInterface实现
+用于标准化会话验证行为
+"""
+
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+from typing import Optional
+
+
+class SessionVerificationInterface(ABC):
+    """会话验证接口
+
+    定义了会话验证所需的基本操作，参考osu-web的实现
+    """
+
+    @classmethod
+    @abstractmethod
+    async def find_for_verification(cls, session_id: str) -> Optional[SessionVerificationInterface]:
+        """根据会话ID查找会话用于验证
+
+        Args:
+            session_id: 会话ID
+
+        Returns:
+            会话实例或None
+        """
+        pass
+
+    @abstractmethod
+    def get_key(self) -> str:
+        """获取会话密钥/ID"""
+        pass
+
+    @abstractmethod
+    def get_key_for_event(self) -> str:
+        """获取用于事件广播的会话密钥"""
+        pass
+
+    @abstractmethod
+    def get_verification_method(self) -> Optional[str]:
+        """获取当前验证方法
+
+        Returns:
+            验证方法 ('totp', 'mail') 或 None
+        """
+        pass
+
+    @abstractmethod
+    def is_verified(self) -> bool:
+        """检查会话是否已验证"""
+        pass
+
+    @abstractmethod
+    async def mark_verified(self) -> None:
+        """标记会话为已验证"""
+        pass
+
+    @abstractmethod
+    async def set_verification_method(self, method: str) -> None:
+        """设置验证方法
+
+        Args:
+            method: 验证方法 ('totp', 'mail')
+        """
+        pass
+
+    @abstractmethod
+    def user_id(self) -> Optional[int]:
+        """获取关联的用户ID"""
+        pass
diff --git a/app/middleware/__init__.py b/app/middleware/__init__.py
new file mode 100644
index 0000000..e9464bf
--- /dev/null
+++ b/app/middleware/__init__.py
@@ -0,0 +1,9 @@
+"""
+中间件模块
+
+提供会话验证和其他中间件功能
+"""
+
+from .verify_session import VerifySessionMiddleware, SessionState
+
+__all__ = ["VerifySessionMiddleware", "SessionState"]
diff --git a/app/middleware/session_verification.py b/app/middleware/session_verification.py
new file mode 100644
index 0000000..44cbfc2
--- /dev/null
+++ b/app/middleware/session_verification.py
@@ -0,0 +1,318 @@
+"""
+会话验证中间件和状态管理
+
+基于osu-web的会话验证系统实现
+"""
+
+from __future__ import annotations
+
+import asyncio
+from typing import Awaitable, Callable, Optional
+
+from fastapi import HTTPException, Request, Response, status
+from fastapi.responses import JSONResponse
+from redis.asyncio import Redis
+from sqlmodel.ext.asyncio.session import AsyncSession
+
+from app.database.lazer_user import User
+from app.database.verification import LoginSession
+from app.dependencies.database import with_db, get_redis
+from app.log import logger
+from app.service.verification_service import LoginSessionService
+
+
+class SessionVerificationState:
+    """会话验证状态管理类
+
+    参考osu-web的State类实现
+    """
+
+    def __init__(self, session: LoginSession, user: User, redis: Redis):
+        self.session = session
+        self.user = user
+        self.redis = redis
+
+    @classmethod
+    async def get_current(
+        cls,
+        request: Request,
+        db: AsyncSession,
+        redis: Redis,
+        user: User,
+    ) -> Optional[SessionVerificationState]:
+        """获取当前会话验证状态"""
+        try:
+            # 从请求头或token中获取会话信息
+            session_token = cls._extract_session_token(request)
+            if not session_token:
+                return None
+
+            # 查找会话
+            session = await LoginSessionService.find_for_verification(db, session_token)
+            if not session or session.user_id != user.id:
+                return None
+
+            return cls(session, user, redis)
+        except Exception as e:
+            logger.error(f"[Session Verification] Error getting current state: {e}")
+            return None
+
+    @staticmethod
+    def _extract_session_token(request: Request) -> Optional[str]:
+        """从请求中提取会话token"""
+        # 尝试从Authorization header提取
+        auth_header = request.headers.get("Authorization", "")
+        if auth_header.startswith("Bearer "):
+            return auth_header[7:]  # 移除"Bearer "前缀
+
+        # 可以扩展其他提取方式
+        return None
+
+    def get_method(self) -> str:
+        """获取验证方法
+
+        参考osu-web的逻辑，智能选择验证方法
+        """
+        current_method = self.session.verification_method
+
+        if current_method is None:
+            # 智能选择验证方法
+            # 参考osu-web: API版本 < 20250913 或用户没有TOTP时使用邮件验证
+            # 这里简化为检查用户是否有TOTP
+            totp_key = getattr(self.user, 'totp_key', None)
+            current_method = 'totp' if totp_key else 'mail'
+
+            # 设置验证方法
+            asyncio.create_task(self._set_verification_method(current_method))
+
+        return current_method
+
+    async def _set_verification_method(self, method: str) -> None:
+        """内部方法：设置验证方法"""
+        try:
+            token_id = self.session.token_id
+            if token_id is not None and method in ['totp', 'mail']:
+                # 类型检查确保method是正确的字面量类型
+                verification_method = method if method in ['totp', 'mail'] else 'totp'
+                await LoginSessionService.set_login_method(
+                    self.user.id, token_id, verification_method, self.redis  # type: ignore
+                )
+        except Exception as e:
+            logger.error(f"[Session Verification] Error setting verification method: {e}")
+
+    def is_verified(self) -> bool:
+        """检查会话是否已验证"""
+        return self.session.is_verified
+
+    async def mark_verified(self) -> None:
+        """标记会话为已验证"""
+        try:
+            # 创建专用数据库会话
+            db = with_db()
+            try:
+                token_id = self.session.token_id
+                if token_id is not None:
+                    await LoginSessionService.mark_session_verified(
+                        db, self.redis, self.user.id, token_id
+                    )
+            finally:
+                await db.close()
+        except Exception as e:
+            logger.error(f"[Session Verification] Error marking session verified: {e}")
+
+    def get_key(self) -> str:
+        """获取会话密钥"""
+        return str(self.session.id) if self.session.id else ""
+
+    def get_key_for_event(self) -> str:
+        """获取用于事件广播的会话密钥"""
+        return LoginSessionService.get_key_for_event(self.get_key())
+
+    def user_id(self) -> int:
+        """获取用户ID"""
+        return self.user.id
+
+    async def issue_mail_if_needed(self) -> None:
+        """如果需要，发送验证邮件"""
+        try:
+            if self.get_method() == "mail":
+                from app.service.verification_service import EmailVerificationService
+
+                # 创建专用数据库会话发送邮件
+                db = with_db()
+                try:
+                    await EmailVerificationService.send_verification_email(
+                        db, self.redis, self.user.id, self.user.username,
+                        self.user.email, None, None
+                    )
+                finally:
+                    await db.close()
+        except Exception as e:
+            logger.error(f"[Session Verification] Error issuing mail: {e}")
+
+
+class SessionVerificationController:
+    """会话验证控制器
+
+    参考osu-web的Controller类实现
+    """
+
+    # 需要跳过验证的路由（参考osu-web的SKIP_VERIFICATION_ROUTES）
+    SKIP_VERIFICATION_ROUTES = {
+        "/api/v2/session/verify",
+        "/api/v2/session/verify/reissue",
+        "/api/v2/me",
+        "/api/v2/logout",
+        "/oauth/token",
+    }
+
+    @staticmethod
+    def should_skip_verification(request: Request) -> bool:
+        """检查是否应该跳过验证"""
+        path = request.url.path
+        return path in SessionVerificationController.SKIP_VERIFICATION_ROUTES
+
+    @staticmethod
+    async def initiate_verification(
+        state: SessionVerificationState,
+        request: Request,
+    ) -> Response:
+        """启动会话验证流程
+
+        参考osu-web的initiate方法
+        """
+        try:
+            method = state.get_method()
+
+            # 如果是邮件验证，发送验证邮件
+            if method == "mail":
+                await state.issue_mail_if_needed()
+
+            # API请求返回JSON响应
+            if request.url.path.startswith("/api/"):
+                return JSONResponse(
+                    status_code=status.HTTP_401_UNAUTHORIZED,
+                    content={"method": method}
+                )
+
+            # 其他情况可以扩展支持HTML响应
+            return JSONResponse(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                content={
+                    "authentication": "verify",
+                    "method": method,
+                    "message": "Session verification required"
+                }
+            )
+
+        except Exception as e:
+            logger.error(f"[Session Verification] Error initiating verification: {e}")
+            raise HTTPException(
+                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                detail="Verification initiation failed"
+            )
+
+
+class SessionVerificationMiddleware:
+    """会话验证中间件
+
+    参考osu-web的VerifyUser中间件实现
+    """
+
+    def __init__(self, app: Callable[[Request], Awaitable[Response]]):
+        self.app = app
+
+    async def __call__(self, request: Request, call_next: Callable[[Request], Awaitable[Response]]) -> Response:
+        """中间件主要逻辑"""
+        try:
+            # 检查是否需要跳过验证
+            if SessionVerificationController.should_skip_verification(request):
+                return await call_next(request)
+
+            # 获取依赖项
+            user = await self._get_user(request)
+            if not user:
+                # 未认证用户跳过验证
+                return await call_next(request)
+
+            # 获取数据库和Redis连接
+            db = await self._get_db()
+            redis = await self._get_redis()
+
+            # 获取会话验证状态
+            state = await SessionVerificationState.get_current(request, db, redis, user)
+            if not state:
+                # 无法获取会话状态，继续请求
+                return await call_next(request)
+
+            # 检查是否已验证
+            if state.is_verified():
+                # 已验证，继续请求
+                return await call_next(request)
+
+            # 检查是否需要验证
+            if not self._requires_verification(request):
+                return await call_next(request)
+
+            # 启动验证流程
+            return await SessionVerificationController.initiate_verification(state, request)
+
+        except Exception as e:
+            logger.error(f"[Session Verification Middleware] Unexpected error: {e}")
+            # 出错时允许请求继续，避免阻塞正常流程
+            return await call_next(request)
+
+    async def _get_user(self, request: Request) -> Optional[User]:
+        """获取当前用户"""
+        try:
+            # 这里需要手动获取用户，因为在中间件中无法直接使用依赖注入
+            # 简化实现，实际应该从token中解析用户
+            return None  # 暂时返回None，需要实际实现
+        except Exception:
+            return None
+
+    async def _get_db(self) -> AsyncSession:
+        """获取数据库连接"""
+        return with_db()
+
+    async def _get_redis(self) -> Redis:
+        """获取Redis连接"""
+        return get_redis()
+
+    def _requires_verification(self, request: Request) -> bool:
+        """检查是否需要验证
+
+        参考osu-web的requiresVerification方法
+        """
+        method = request.method
+
+        # GET/HEAD/OPTIONS请求一般不需要验证
+        safe_methods = {"GET", "HEAD", "OPTIONS"}
+        if method in safe_methods:
+            return False
+
+        # POST/PUT/DELETE等修改操作需要验证
+        return True
+
+
+# FastAPI中间件包装器
+class FastAPISessionVerificationMiddleware:
+    """FastAPI会话验证中间件包装器"""
+
+    def __init__(self, app):
+        self.app = app
+
+    async def __call__(self, scope, receive, send):
+        if scope["type"] != "http":
+            return await self.app(scope, receive, send)
+
+        request = Request(scope, receive)
+
+        async def call_next(req: Request) -> Response:
+            # 这里需要调用FastAPI应用
+            return Response("OK")  # 占位符实现
+
+        middleware = SessionVerificationMiddleware(call_next)
+        response = await middleware(request, call_next)
+
+        await response(scope, receive, send)
diff --git a/app/middleware/setup.py b/app/middleware/setup.py
new file mode 100644
index 0000000..13cdca7
--- /dev/null
+++ b/app/middleware/setup.py
@@ -0,0 +1,44 @@
+"""
+中间件设置和配置
+
+展示如何将会话验证中间件集成到FastAPI应用中
+"""
+
+from fastapi import FastAPI
+
+from app.config import settings
+from app.middleware.verify_session import VerifySessionMiddleware
+
+
+def setup_session_verification_middleware(app: FastAPI) -> None:
+    """设置会话验证中间件
+
+    Args:
+        app: FastAPI应用实例
+    """
+    # 只在启用会话验证时添加中间件
+    if settings.enable_session_verification:
+        app.add_middleware(VerifySessionMiddleware)
+
+        # 可以在这里添加中间件配置日志
+        from app.log import logger
+        logger.info("[Middleware] Session verification middleware enabled")
+    else:
+        from app.log import logger
+        logger.info("[Middleware] Session verification middleware disabled")
+
+
+def setup_all_middlewares(app: FastAPI) -> None:
+    """设置所有中间件
+
+    Args:
+        app: FastAPI应用实例
+    """
+    # 设置会话验证中间件
+    setup_session_verification_middleware(app)
+
+    # 可以在这里添加其他中间件
+    # app.add_middleware(OtherMiddleware)
+
+    from app.log import logger
+    logger.info("[Middleware] All middlewares configured")
diff --git a/app/middleware/verify_session.py b/app/middleware/verify_session.py
new file mode 100644
index 0000000..8d406e3
--- /dev/null
+++ b/app/middleware/verify_session.py
@@ -0,0 +1,287 @@
+"""
+FastAPI会话验证中间件
+
+基于osu-web的会话验证系统，适配FastAPI框架
+"""
+
+from __future__ import annotations
+
+from typing import Callable, Optional
+
+from fastapi import Request, Response, status
+from fastapi.responses import JSONResponse
+from redis.asyncio import Redis
+from sqlmodel.ext.asyncio.session import AsyncSession
+from starlette.middleware.base import BaseHTTPMiddleware
+
+from app.database.lazer_user import User
+from app.database.verification import LoginSession
+from app.dependencies.database import with_db, get_redis
+from app.auth import get_token_by_access_token
+from app.log import logger
+from app.service.verification_service import LoginSessionService
+from sqlmodel import select
+
+
+class VerifySessionMiddleware(BaseHTTPMiddleware):
+    """会话验证中间件
+
+    参考osu-web的VerifyUser中间件，适配FastAPI
+    """
+
+    # 需要跳过验证的路由
+    SKIP_VERIFICATION_ROUTES = {
+        "/api/v2/session/verify",
+        "/api/v2/session/verify/reissue",
+        "/api/v2/me",
+        "/api/v2/logout",
+        "/oauth/token",
+        "/health",
+        "/metrics",
+        "/docs",
+        "/openapi.json",
+        "/redoc",
+    }
+
+    # 需要强制验证的路由模式（敏感操作）
+    ALWAYS_VERIFY_PATTERNS = {
+        "/api/v2/account/",
+        "/api/v2/settings/",
+        "/api/private/admin/",
+    }
+
+    async def dispatch(self, request: Request, call_next: Callable) -> Response:
+        """中间件主处理逻辑"""
+        try:
+            # 检查是否跳过验证
+            if self._should_skip_verification(request):
+                return await call_next(request)
+
+            # 获取当前用户
+            user = await self._get_current_user(request)
+            if not user:
+                # 未登录用户跳过验证
+                return await call_next(request)
+
+            # 获取会话状态
+            session_state = await self._get_session_state(request, user)
+            if not session_state:
+                # 无会话状态，继续请求
+                return await call_next(request)
+
+            # 检查是否已验证
+            if session_state.is_verified():
+                return await call_next(request)
+
+            # 检查是否需要验证
+            if not self._requires_verification(request, user):
+                return await call_next(request)
+
+            # 启动验证流程
+            return await self._initiate_verification(request, session_state)
+
+        except Exception as e:
+            logger.error(f"[Verify Session Middleware] Error: {e}")
+            # 出错时允许请求继续，避免阻塞
+            return await call_next(request)
+
+    def _should_skip_verification(self, request: Request) -> bool:
+        """检查是否应该跳过验证"""
+        path = request.url.path
+
+        # 完全匹配的跳过路由
+        if path in self.SKIP_VERIFICATION_ROUTES:
+            return True
+
+        # 非API请求跳过
+        if not path.startswith("/api/"):
+            return True
+
+        return False
+
+    def _requires_verification(self, request: Request, user: User) -> bool:
+        """检查是否需要验证"""
+        path = request.url.path
+        method = request.method
+
+        # 检查是否为强制验证的路由
+        for pattern in self.ALWAYS_VERIFY_PATTERNS:
+            if path.startswith(pattern):
+                return True
+
+        # 特权用户或非活跃用户需要验证
+        if hasattr(user, 'is_privileged') and user.is_privileged():
+            return True
+        if hasattr(user, 'is_inactive') and user.is_inactive():
+            return True
+
+        # 安全方法（GET/HEAD/OPTIONS）一般不需要验证
+        safe_methods = {"GET", "HEAD", "OPTIONS"}
+        if method in safe_methods:
+            return False
+
+        # 修改操作（POST/PUT/DELETE/PATCH）需要验证
+        return method in {"POST", "PUT", "DELETE", "PATCH"}
+
+    async def _get_current_user(self, request: Request) -> Optional[User]:
+        """获取当前用户"""
+        try:
+            # 从Authorization header提取token
+            auth_header = request.headers.get("Authorization", "")
+            if not auth_header.startswith("Bearer "):
+                return None
+
+            token = auth_header[7:]  # 移除"Bearer "前缀
+
+            # 创建专用数据库会话
+            db = with_db()
+            try:
+                # 获取token记录
+                token_record = await get_token_by_access_token(db, token)
+                if not token_record:
+                    return None
+
+                # 获取用户
+                user = (await db.exec(select(User).where(User.id == token_record.user_id))).first()
+                return user
+            finally:
+                await db.close()
+
+        except Exception as e:
+            logger.debug(f"[Verify Session Middleware] Error getting user: {e}")
+            return None
+
+    async def _get_session_state(self, request: Request, user: User) -> Optional[SessionState]:
+        """获取会话状态"""
+        try:
+            # 提取会话token（这里简化为使用相同的auth token）
+            auth_header = request.headers.get("Authorization", "")
+            if not auth_header.startswith("Bearer "):
+                return None
+
+            session_token = auth_header[7:]
+
+            # 获取数据库和Redis连接
+            db = with_db()
+            try:
+                redis = get_redis()
+
+                # 查找会话
+                session = await LoginSessionService.find_for_verification(db, session_token)
+                if not session or session.user_id != user.id:
+                    return None
+
+                return SessionState(session, user, redis, db)
+            finally:
+                await db.close()
+
+        except Exception as e:
+            logger.error(f"[Verify Session Middleware] Error getting session state: {e}")
+            return None
+
+    async def _initiate_verification(self, request: Request, state: SessionState) -> Response:
+        """启动验证流程"""
+        try:
+            method = await state.get_method()
+
+            # 如果是邮件验证，可以在这里触发发送邮件
+            if method == "mail":
+                await state.issue_mail_if_needed()
+
+            # 返回验证要求响应
+            return JSONResponse(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                content={
+                    "method": method,
+                    "message": "Session verification required"
+                }
+            )
+
+        except Exception as e:
+            logger.error(f"[Verify Session Middleware] Error initiating verification: {e}")
+            return JSONResponse(
+                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                content={"error": "Verification initiation failed"}
+            )
+
+
+class SessionState:
+    """会话状态类
+
+    简化版本的会话状态管理
+    """
+
+    def __init__(self, session: LoginSession, user: User, redis: Redis, db: AsyncSession):
+        self.session = session
+        self.user = user
+        self.redis = redis
+        self.db = db
+        self._verification_method: Optional[str] = None
+
+    def is_verified(self) -> bool:
+        """检查会话是否已验证"""
+        return self.session.is_verified
+
+    async def get_method(self) -> str:
+        """获取验证方法"""
+        if self._verification_method is None:
+            # 从Redis获取已设置的方法
+            token_id = self.session.token_id
+            if token_id is not None:
+                self._verification_method = await LoginSessionService.get_login_method(
+                    self.user.id, token_id, self.redis
+                )
+
+            # 如果没有设置，智能选择
+            if self._verification_method is None:
+                # 检查用户是否有TOTP密钥
+                await self.user.awaitable_attrs.totp_key  # 预加载
+                totp_key = getattr(self.user, 'totp_key', None)
+                self._verification_method = 'totp' if totp_key else 'mail'
+
+                # 保存选择的方法
+                token_id = self.session.token_id
+                if token_id is not None:
+                    await LoginSessionService.set_login_method(
+                        self.user.id, token_id, self._verification_method, self.redis
+                    )
+
+        return self._verification_method
+
+    async def mark_verified(self) -> None:
+        """标记会话为已验证"""
+        try:
+            token_id = self.session.token_id
+            if token_id is not None:
+                await LoginSessionService.mark_session_verified(
+                    self.db, self.redis, self.user.id, token_id
+                )
+                self.session.is_verified = True  # 更新本地状态
+        except Exception as e:
+            logger.error(f"[Session State] Error marking verified: {e}")
+
+    async def issue_mail_if_needed(self) -> None:
+        """如果需要，发送验证邮件"""
+        try:
+            if await self.get_method() == "mail":
+                from app.service.verification_service import EmailVerificationService
+
+                # 这里可以触发邮件发送
+                await EmailVerificationService.send_verification_email(
+                    self.db, self.redis, self.user.id, self.user.username,
+                    self.user.email, None, None
+                )
+        except Exception as e:
+            logger.error(f"[Session State] Error issuing mail: {e}")
+
+    def get_key(self) -> str:
+        """获取会话密钥"""
+        return str(self.session.id) if self.session.id else ""
+
+    def get_key_for_event(self) -> str:
+        """获取用于事件广播的会话密钥"""
+        return LoginSessionService.get_key_for_event(self.get_key())
+
+    def user_id(self) -> int:
+        """获取用户ID"""
+        return self.user.id
diff --git a/app/router/private/totp.py b/app/router/private/totp.py
index c6e5419..8dcb1c3 100644
--- a/app/router/private/totp.py
+++ b/app/router/private/totp.py
@@ -7,7 +7,6 @@ from app.auth import (
     totp_redis_key,
     verify_totp_key_with_replay_protection,
 )
-from app.config import settings
 from app.const import BACKUP_CODE_LENGTH
 from app.database.auth import TotpKeys
 from app.database.lazer_user import User
@@ -19,9 +18,38 @@ from .router import router
 
 from fastapi import Body, Depends, HTTPException, Security
 import pyotp
+from pydantic import BaseModel
 from redis.asyncio import Redis
 
 
+class TotpStatusResp(BaseModel):
+    """TOTP状态响应"""
+    enabled: bool
+    created_at: str | None = None
+
+
+@router.get(
+    "/totp/status",
+    name="检查 TOTP 状态",
+    description="检查当前用户是否已启用 TOTP 双因素验证",
+    tags=["验证", "g0v0 API"],
+    response_model=TotpStatusResp,
+)
+async def get_totp_status(
+    current_user: User = Security(get_client_user),
+):
+    """检查用户是否已创建TOTP"""
+    totp_key = await current_user.awaitable_attrs.totp_key
+
+    if totp_key:
+        return TotpStatusResp(
+            enabled=True,
+            created_at=totp_key.created_at.isoformat()
+        )
+    else:
+        return TotpStatusResp(enabled=False)
+
+
 @router.post(
     "/totp/create",
     name="开始 TOTP 创建流程",
@@ -44,11 +72,16 @@ async def start_create_totp(
 
     previous = await redis.hgetall(totp_redis_key(current_user))  # pyright: ignore[reportGeneralTypeIssues]
     if previous:  # pyright: ignore[reportGeneralTypeIssues]
+        from app.auth import _generate_totp_account_label, _generate_totp_issuer_name
+
+        account_label = _generate_totp_account_label(current_user)
+        issuer_name = _generate_totp_issuer_name()
+
         return StartCreateTotpKeyResp(
             secret=previous["secret"],
             uri=pyotp.totp.TOTP(previous["secret"]).provisioning_uri(
-                name=current_user.email,
-                issuer_name=settings.totp_issuer,
+                name=account_label,
+                issuer_name=issuer_name,
             ),
         )
     return await start_create_totp_key(current_user, redis)
diff --git a/app/router/v2/session_verify.py b/app/router/v2/session_verify.py
index e051e4e..88b9201 100644
--- a/app/router/v2/session_verify.py
+++ b/app/router/v2/session_verify.py
@@ -86,6 +86,7 @@ async def verify_session(
         if verify_method is None:
             # 智能选择验证方法（参考osu-web实现）
             # API版本较老或用户未设置TOTP时强制使用邮件验证
+            print(api_version, totp_key)
             if api_version < 20240101 or totp_key is None:
                 verify_method = "mail"
             else:
diff --git a/app/service/verification_service.py b/app/service/verification_service.py
index 1a1dfd2..32c72bf 100644
--- a/app/service/verification_service.py
+++ b/app/service/verification_service.py
@@ -7,10 +7,11 @@ from __future__ import annotations
 from datetime import timedelta
 import secrets
 import string
-from typing import Literal
+from typing import Literal, Optional
 
 from app.config import settings
 from app.database.verification import EmailVerification, LoginSession
+from app.interfaces.session_verification import SessionVerificationInterface
 from app.log import logger
 from app.service.client_detection_service import ClientDetectionService, ClientInfo
 from app.service.device_trust_service import DeviceTrustService
@@ -514,6 +515,26 @@ This email was sent automatically, please do not reply.
 class LoginSessionService:
     """登录会话服务"""
 
+    # Session verification interface methods
+    @staticmethod
+    async def find_for_verification(db: AsyncSession, session_id: str) -> Optional[LoginSession]:
+        """根据会话ID查找会话用于验证"""
+        try:
+            result = await db.exec(
+                select(LoginSession).where(
+                    LoginSession.session_token == session_id,
+                    LoginSession.expires_at > utcnow(),
+                )
+            )
+            return result.first()
+        except Exception:
+            return None
+
+    @staticmethod
+    def get_key_for_event(session_id: str) -> str:
+        """获取用于事件广播的会话密钥"""
+        return f"g0v0:{session_id}"
+
     @staticmethod
     async def create_session(
         db: AsyncSession,
diff --git a/main.py b/main.py
index 23c0851..b1463eb 100644
--- a/main.py
+++ b/main.py
@@ -46,6 +46,8 @@ from fastapi.responses import JSONResponse, RedirectResponse
 from fastapi_limiter import FastAPILimiter
 import sentry_sdk
 
+from app.middleware.verify_session import VerifySessionMiddleware
+
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
@@ -171,6 +173,10 @@ app.include_router(lio_router)
 # from app.signalr import signalr_router
 # app.include_router(signalr_router)
 
+# 会话验证中间件
+if settings.enable_session_verification:
+    app.add_middleware(VerifySessionMiddleware)
+
 # CORS 配置
 origins = []
 for url in [*settings.cors_urls, settings.server_url]:
diff --git a/migrations/versions/2025-09-24_9419272e4c85_feat_db_add_session_verification_fields_.py b/migrations/versions/2025-09-24_9419272e4c85_feat_db_add_session_verification_fields_.py
new file mode 100644
index 0000000..0207889
--- /dev/null
+++ b/migrations/versions/2025-09-24_9419272e4c85_feat_db_add_session_verification_fields_.py
@@ -0,0 +1,38 @@
+"""feat(db): add session verification fields to login_session
+
+Revision ID: 9419272e4c85
+Revises: fe8e9f3da298
+Create Date: 2025-09-24 00:46:57.367742
+
+"""
+from __future__ import annotations
+
+from collections.abc import Sequence
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+# revision identifiers, used by Alembic.
+revision: str = "9419272e4c85"
+down_revision: str | Sequence[str] | None = "fe8e9f3da298"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column("login_sessions", sa.Column("session_token", sqlmodel.sql.sqltypes.AutoString(length=64), nullable=True))
+    op.add_column("login_sessions", sa.Column("verification_method", sqlmodel.sql.sqltypes.AutoString(length=20), nullable=True))
+    op.create_index(op.f("ix_login_sessions_session_token"), "login_sessions", ["session_token"], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f("ix_login_sessions_session_token"), table_name="login_sessions")
+    op.drop_column("login_sessions", "verification_method")
+    op.drop_column("login_sessions", "session_token")
+    # ### end Alembic commands ###