diff --git a/apps/jingrow/frontend/src/app/main.ts b/apps/jingrow/frontend/src/app/main.ts
index 1d8b71a..1a95c68 100644
--- a/apps/jingrow/frontend/src/app/main.ts
+++ b/apps/jingrow/frontend/src/app/main.ts
@@ -21,6 +21,9 @@ app.use(createPinia())
 app.use(router)
 app.use(naive)
 
+// 初始化fetch拦截器（需要在pinia初始化之后）
+import '../shared/utils/fetchInterceptor'
+
 // 初始化认证状态
 import { useAuthStore } from '../shared/stores/auth'
 const authStore = useAuthStore()
diff --git a/apps/jingrow/frontend/src/app/router/index.ts b/apps/jingrow/frontend/src/app/router/index.ts
index 21479fc..7e82b34 100644
--- a/apps/jingrow/frontend/src/app/router/index.ts
+++ b/apps/jingrow/frontend/src/app/router/index.ts
@@ -183,7 +183,7 @@ const router = createRouter({
 router.beforeEach(async (to, _from, next) => {
   const authStore = useAuthStore()
   
-  // 初始化认证状态
+  // 初始化认证状态（内部会检查cookie是否过期）
   if (!authStore.isAuthenticated) {
     await authStore.initAuth()
   }
diff --git a/apps/jingrow/frontend/src/shared/api/auth.ts b/apps/jingrow/frontend/src/shared/api/auth.ts
index db3b981..a7aa533 100644
--- a/apps/jingrow/frontend/src/shared/api/auth.ts
+++ b/apps/jingrow/frontend/src/shared/api/auth.ts
@@ -27,6 +27,14 @@ export function getSessionCookie(): string | null {
   return cookies.get('sid')
 }
 
+// 检查cookie是否过期（通过检查session cookie是否存在）
+export function isCookieExpired(): boolean {
+  const sessionCookie = getSessionCookie()
+  const sessionUser = getSessionUser()
+  // 如果session cookie或user_id不存在，认为cookie已过期
+  return !sessionCookie || !sessionUser
+}
+
 export const loginApi = async (username: string, password: string): Promise<LoginResponse> => {
   const response = await fetch(`/jingrow/login`, {
     method: 'POST',
@@ -67,6 +75,13 @@ export const getUserInfoApi = async (): Promise<UserInfo> => {
   })
 
   if (!response.ok) {
+    // 401或403表示cookie过期或未授权
+    if (response.status === 401 || response.status === 403) {
+      const error = new Error('Cookie已过期，请重新登录')
+      // @ts-ignore
+      error.status = response.status
+      throw error
+    }
     const errorData = await response.json().catch(() => ({}))
     throw new Error(errorData.detail || errorData.message || '获取用户信息失败')
   }
diff --git a/apps/jingrow/frontend/src/shared/stores/auth.ts b/apps/jingrow/frontend/src/shared/stores/auth.ts
index a75639c..1b5b4af 100644
--- a/apps/jingrow/frontend/src/shared/stores/auth.ts
+++ b/apps/jingrow/frontend/src/shared/stores/auth.ts
@@ -1,6 +1,6 @@
 import { defineStore } from 'pinia'
 import { ref, computed } from 'vue'
-import { loginApi, getUserInfoApi, logoutApi, getSessionUser } from '../api/auth'
+import { loginApi, getUserInfoApi, logoutApi, getSessionUser, isCookieExpired } from '../api/auth'
 
 export interface User {
   id: string
@@ -59,6 +59,15 @@ export const useAuthStore = defineStore('auth', () => {
   }
 
   const initAuth = async () => {
+    // 首先检查Cookie是否过期
+    if (isCookieExpired()) {
+      // Cookie已过期，清除本地状态
+      if (isAuthenticated.value) {
+        await logout()
+      }
+      return
+    }
+
     // 首先检查Cookie中的session
     const sessionUser = getSessionUser()
     if (sessionUser) {
@@ -72,8 +81,12 @@ export const useAuthStore = defineStore('auth', () => {
         localStorage.setItem('jingrow_user', JSON.stringify(userInfo))
         localStorage.setItem('jingrow_authenticated', 'true')
         return
-      } catch (error) {
+      } catch (error: any) {
         console.error('验证用户信息失败:', error)
+        // 如果是401/403错误，说明cookie已过期
+        if (error.status === 401 || error.status === 403 || error.message?.includes('过期')) {
+          await logout()
+        }
       }
     }
 
@@ -89,9 +102,14 @@ export const useAuthStore = defineStore('auth', () => {
         // 验证用户信息是否仍然有效
         const userInfo = await getUserInfoApi()
         user.value = userInfo
-      } catch (error) {
+      } catch (error: any) {
         console.error('验证用户信息失败:', error)
-        logout()
+        // 如果是401/403错误，说明cookie已过期
+        if (error.status === 401 || error.status === 403 || error.message?.includes('过期')) {
+          await logout()
+        } else {
+          logout()
+        }
       }
     }
   }
@@ -103,8 +121,12 @@ export const useAuthStore = defineStore('auth', () => {
       const userInfo = await getUserInfoApi()
       user.value = userInfo
       localStorage.setItem('jingrow_user', JSON.stringify(userInfo))
-    } catch (error) {
+    } catch (error: any) {
       console.error('更新用户信息失败:', error)
+      // 如果是401/403错误，说明cookie已过期
+      if (error.status === 401 || error.status === 403 || error.message?.includes('过期')) {
+        await logout()
+      }
     }
   }
 
diff --git a/apps/jingrow/frontend/src/shared/utils/fetchInterceptor.ts b/apps/jingrow/frontend/src/shared/utils/fetchInterceptor.ts
new file mode 100644
index 0000000..f488aed
--- /dev/null
+++ b/apps/jingrow/frontend/src/shared/utils/fetchInterceptor.ts
@@ -0,0 +1,37 @@
+// 保存原始的fetch函数
+const originalFetch = window.fetch
+
+// 包装fetch函数，添加401/403错误处理
+window.fetch = async function(...args: Parameters<typeof fetch>): Promise<Response> {
+  const response = await originalFetch(...args)
+  
+  // 检查响应状态码（仅在401/403时处理）
+  if (response.status === 401 || response.status === 403) {
+    // 延迟导入，确保pinia已初始化
+    try {
+      const { useAuthStore } = await import('../stores/auth')
+      const { default: router } = await import('../../app/router')
+      const authStore = useAuthStore()
+      
+      // 如果用户已登录，执行登出操作
+      if (authStore.isLoggedIn) {
+        console.warn('检测到401/403错误，Cookie已过期，自动退出登录')
+        await authStore.logout()
+        
+        // 跳转到登录页（避免重复跳转）
+        if (router.currentRoute.value.path !== '/login') {
+          router.push('/login')
+        }
+      }
+    } catch (error) {
+      // 如果store还未初始化，忽略错误（应用启动阶段）
+      // 这不会影响正常的API调用
+    }
+  }
+  
+  return response
+}
+
+// 导出原始fetch（如果需要的话）
+export { originalFetch as originalFetch }
+