diff --git a/src/App.tsx b/src/App.tsx
index 0e33858..b2678ef 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -2,6 +2,7 @@ import { Routes, Route } from 'react-router-dom';
 import HomePage from '@/pages/HomePage';
 import SSOLogin from '@/pages/SSOLogin';
 import LoginPage from '@/pages/LoginPage';
+import RequireAuth from '@/shared/components/RequireAuth';
 import AIMCockpit from '@/modules/ai-matching/pages/AIMCockpit';
 import CostCockpit from '@/modules/cost-analysis/pages/CostCockpit';
 import KnowledgeGraphHome from '@/modules/knowledge-graph/pages/KnowledgeGraphHome';
@@ -15,18 +16,18 @@ import SanruiAIDesignHome from '@/modules/sanrui-ai-design/pages/SanruiAIDesignH
 export default function App() {
   return (
     <Routes>
-      <Route path="/" element={<HomePage />} />
       <Route path="/login" element={<LoginPage />} />
       <Route path="/sso-login" element={<SSOLogin />} />
-      <Route path="/ai-matching" element={<AIMCockpit />} />
-      <Route path="/cost-analysis" element={<CostCockpit />} />
-      <Route path="/knowledge-graph" element={<KnowledgeGraphHome />} />
-      <Route path="/knowledge-graph/space" element={<SpaceCockpit />} />
-      <Route path="/bomx-reuse-analyzer" element={<BomxReuseHome />} />
-      <Route path="/order-cost-analysis" element={<CostCockpitFull />} />
-      <Route path="/order-cost-analysis/aim" element={<AIMCockpitFull />} />
-      <Route path="/bexell-scheduling-ai/*" element={<BexellSchedulingApp />} />
-      <Route path="/sanrui-ai-design" element={<SanruiAIDesignHome />} />
+      <Route path="/" element={<RequireAuth><HomePage /></RequireAuth>} />
+      <Route path="/ai-matching" element={<RequireAuth><AIMCockpit /></RequireAuth>} />
+      <Route path="/cost-analysis" element={<RequireAuth><CostCockpit /></RequireAuth>} />
+      <Route path="/knowledge-graph" element={<RequireAuth><KnowledgeGraphHome /></RequireAuth>} />
+      <Route path="/knowledge-graph/space" element={<RequireAuth><SpaceCockpit /></RequireAuth>} />
+      <Route path="/bomx-reuse-analyzer" element={<RequireAuth><BomxReuseHome /></RequireAuth>} />
+      <Route path="/order-cost-analysis" element={<RequireAuth><CostCockpitFull /></RequireAuth>} />
+      <Route path="/order-cost-analysis/aim" element={<RequireAuth><AIMCockpitFull /></RequireAuth>} />
+      <Route path="/bexell-scheduling-ai/*" element={<RequireAuth><BexellSchedulingApp /></RequireAuth>} />
+      <Route path="/sanrui-ai-design" element={<RequireAuth><SanruiAIDesignHome /></RequireAuth>} />
     </Routes>
   );
 }
diff --git a/src/pages/HomePage.tsx b/src/pages/HomePage.tsx
index 07507b4..0581026 100644
--- a/src/pages/HomePage.tsx
+++ b/src/pages/HomePage.tsx
@@ -24,14 +24,6 @@ export default function HomePage() {
   const [searchParams] = useSearchParams();
   const [userInfo, setUserInfo] = useState<SessionUserInfo | null>(() => getUserInfo());
 
-  // 登录守卫：未登录跳转 /login
-  useEffect(() => {
-    const token = sessionStorage.getItem('userToken');
-    if (!token) {
-      navigate('/login', { replace: true });
-    }
-  }, [navigate]);
-
   // 首页模块多时需纵向滚动；离开后恢复全局 overflow:hidden（其他模块自管布局）
   useEffect(() => {
     document.body.style.overflow = 'auto';
diff --git a/src/pages/LoginPage.tsx b/src/pages/LoginPage.tsx
index 99f9fa2..c0ead1f 100644
--- a/src/pages/LoginPage.tsx
+++ b/src/pages/LoginPage.tsx
@@ -1,5 +1,5 @@
 import { useState, useEffect } from 'react';
-import { useNavigate } from 'react-router-dom';
+import { useNavigate, useLocation } from 'react-router-dom';
 import { User, Lock, LogIn, AlertCircle, Loader2 } from 'lucide-react';
 import StarBackground from '@/shared/components/StarBackground';
 import { iamLogin, saveSession } from '@/shared/services/iamAuth';
@@ -28,6 +28,7 @@ const iconStyle = (isDark: boolean): React.CSSProperties => ({
 
 export default function LoginPage() {
   const navigate = useNavigate();
+  const location = useLocation();
   const { theme } = useTheme();
   const isDark = theme === 'dark';
 
@@ -52,7 +53,9 @@ export default function LoginPage() {
     try {
       const result = await iamLogin({ userId: userId.trim(), password });
       saveSession(result.token, result.userInfo);
-      navigate('/', { replace: true });
+      // 回跳原页面（RequireAuth 记录的 from），否则去首页
+      const from = (location.state as { from?: string })?.from ?? '/';
+      navigate(from, { replace: true });
     } catch (ex) {
       setError(ex instanceof Error ? ex.message : '登录失败，请稍后重试');
     } finally {
diff --git a/src/shared/components/RequireAuth.tsx b/src/shared/components/RequireAuth.tsx
new file mode 100644
index 0000000..40e1730
--- /dev/null
+++ b/src/shared/components/RequireAuth.tsx
@@ -0,0 +1,39 @@
+import { ReactNode, useEffect, useState } from 'react';
+import { useLocation, useNavigate } from 'react-router-dom';
+import { Spin } from 'antd';
+
+/**
+ * 登录守卫：未登录跳转 /login
+ *
+ * 检查 sessionStorage 中的 userToken，若不存在则跳转登录页。
+ * 登录后会带上 from state，便于登录成功后回跳原页面。
+ */
+export default function RequireAuth({ children }: { children: ReactNode }) {
+  const navigate = useNavigate();
+  const location = useLocation();
+  const [checked, setChecked] = useState(false);
+
+  useEffect(() => {
+    const token = sessionStorage.getItem('userToken');
+    if (!token) {
+      // 记录原路径，登录后可回跳
+      navigate('/login', { replace: true, state: { from: location.pathname + location.search } });
+      return;
+    }
+    setChecked(true);
+  }, [navigate, location]);
+
+  if (!checked) {
+    return (
+      <div style={{
+        width: '100vw', height: '100vh',
+        display: 'flex', alignItems: 'center', justifyContent: 'center',
+        background: '#0a1628',
+      }}>
+        <Spin size="large" />
+      </div>
+    );
+  }
+
+  return <>{children}</>;
+}