diff --git a/frontend/app/review/page.tsx b/frontend/app/review/page.tsx
index 2fea1e8..ab5bb75 100644
--- a/frontend/app/review/page.tsx
+++ b/frontend/app/review/page.tsx
@@ -249,14 +249,6 @@ export default function ReviewPage() {
                   新增詞卡
                 </button>
 
-                <button
-                  onClick={() => window.location.href = '/stats'}
-                  className="px-8 py-3 bg-purple-600 text-white rounded-lg hover:bg-purple-700 transition-colors font-semibold flex items-center justify-center gap-2"
-                >
-                  <span>📊</span>
-                  查看統計
-                </button>
-
                 <button
                   onClick={() => window.location.href = '/flashcards'}
                   className="px-8 py-3 bg-gray-600 text-white rounded-lg hover:bg-gray-700 transition-colors font-semibold flex items-center justify-center gap-2"
diff --git a/frontend/contexts/AuthContext.tsx b/frontend/contexts/AuthContext.tsx
index 406d54b..abffb4e 100644
--- a/frontend/contexts/AuthContext.tsx
+++ b/frontend/contexts/AuthContext.tsx
@@ -127,6 +127,8 @@ export const AuthProvider: React.FC<AuthProviderProps> = ({ children }) => {
       isAuthenticated: false,
       isLoading: false,
     })
+    // 立即跳轉到登入頁面
+    window.location.href = '/login'
   }
 
   const checkAuth = async (): Promise<boolean> => {