diff --git a/src/components/layout/MainLayout.tsx b/src/components/layout/MainLayout.tsx
index a3e114c..bb002d8 100644
--- a/src/components/layout/MainLayout.tsx
+++ b/src/components/layout/MainLayout.tsx
@@ -300,6 +300,7 @@ export function MainLayout() {
   const logout = useAuthStore((state) => state.logout);
   const connectionStatus = useAuthStore((state) => state.connectionStatus);
   const apiBase = useAuthStore((state) => state.apiBase);
+  const supportsPlugin = useAuthStore((state) => state.supportsPlugin);
 
   const fetchConfig = useConfigStore((state) => state.fetchConfig);
   const clearCache = useConfigStore((state) => state.clearCache);
@@ -430,7 +431,7 @@ export function MainLayout() {
   }, [fetchConfig]);
 
   const loadPluginResources = useCallback(async () => {
-    if (connectionStatus !== 'connected') {
+    if (connectionStatus !== 'connected' || !supportsPlugin) {
       setPluginResources([]);
       return;
     }
@@ -441,7 +442,7 @@ export function MainLayout() {
     } catch {
       setPluginResources([]);
     }
-  }, [connectionStatus]);
+  }, [connectionStatus, supportsPlugin]);
 
   useEffect(() => {
     const timer = window.setTimeout(() => {
@@ -468,39 +469,39 @@ export function MainLayout() {
     return groups;
   }, []);
 
-  const pluginPageNavItems: SidebarNavItem[] = pluginResourceGroups.flatMap(
-    (group): SidebarNavItem[] => {
-      if (group.entries.length === 1) {
-        const resource = group.entries[0];
-        const pluginLogo = resolvePluginAssetURL(resource.pluginLogo, apiBase);
+  const pluginPageNavItems: SidebarNavItem[] = supportsPlugin
+    ? pluginResourceGroups.flatMap((group): SidebarNavItem[] => {
+        if (group.entries.length === 1) {
+          const resource = group.entries[0];
+          const pluginLogo = resolvePluginAssetURL(resource.pluginLogo, apiBase);
+          return [
+            {
+              path: resource.route,
+              label: resource.label,
+              meta: resource.description,
+              icon: <PluginSidebarIcon src={pluginLogo} />,
+            },
+          ];
+        }
+
+        const pluginLogo = resolvePluginAssetURL(group.entries[0]?.pluginLogo ?? '', apiBase);
         return [
           {
-            path: resource.route,
-            label: resource.label,
-            meta: resource.description,
+            kind: 'drawer',
+            id: `plugin-pages-${group.pluginID}`,
+            label: group.pluginTitle,
+            meta: t('plugin_resource.page_count', { count: group.entries.length }),
             icon: <PluginSidebarIcon src={pluginLogo} />,
+            children: group.entries.map((resource) => ({
+              path: resource.route,
+              label: resource.label,
+              meta: resource.description,
+              icon: <span className="nav-sub-dot" aria-hidden="true" />,
+            })),
           },
         ];
-      }
-
-      const pluginLogo = resolvePluginAssetURL(group.entries[0]?.pluginLogo ?? '', apiBase);
-      return [
-        {
-          kind: 'drawer',
-          id: `plugin-pages-${group.pluginID}`,
-          label: group.pluginTitle,
-          meta: t('plugin_resource.page_count', { count: group.entries.length }),
-          icon: <PluginSidebarIcon src={pluginLogo} />,
-          children: group.entries.map((resource) => ({
-            path: resource.route,
-            label: resource.label,
-            meta: resource.description,
-            icon: <span className="nav-sub-dot" aria-hidden="true" />,
-          })),
-        },
-      ];
-    }
-  );
+      })
+    : [];
 
   const navGroups: SidebarNavGroup[] = [
     {
@@ -567,18 +568,22 @@ export function MainLayout() {
           metaKey: 'nav_meta.config_management',
           icon: sidebarIcons.config,
         },
-        {
-          path: '/plugins',
-          labelKey: 'nav.plugins',
-          metaKey: 'nav_meta.plugins',
-          icon: sidebarIcons.plugins,
-        },
-        {
-          path: '/plugin-store',
-          labelKey: 'nav.plugin_store',
-          metaKey: 'nav_meta.plugin_store',
-          icon: sidebarIcons.pluginStore,
-        },
+        ...(supportsPlugin
+          ? [
+              {
+                path: '/plugins',
+                labelKey: 'nav.plugins',
+                metaKey: 'nav_meta.plugins',
+                icon: sidebarIcons.plugins,
+              },
+              {
+                path: '/plugin-store',
+                labelKey: 'nav.plugin_store',
+                metaKey: 'nav_meta.plugin_store',
+                icon: sidebarIcons.pluginStore,
+              },
+            ]
+          : []),
         {
           path: '/system',
           labelKey: 'nav.system_info',
diff --git a/src/router/MainRoutes.tsx b/src/router/MainRoutes.tsx
index f3c6172..629218d 100644
--- a/src/router/MainRoutes.tsx
+++ b/src/router/MainRoutes.tsx
@@ -12,8 +12,9 @@ import { PluginStorePage } from '@/features/plugins/PluginStorePage';
 import { ConfigPage } from '@/pages/ConfigPage';
 import { LogsPage } from '@/pages/LogsPage';
 import { SystemPage } from '@/pages/SystemPage';
+import { useAuthStore } from '@/stores';
 
-const mainRoutes = [
+const createMainRoutes = (supportsPlugin: boolean) => [
   { path: '/', element: <DashboardPage /> },
   { path: '/dashboard', element: <DashboardPage /> },
   { path: '/settings', element: <Navigate to="/config" replace /> },
@@ -25,10 +26,18 @@ const mainRoutes = [
   { path: '/auth-files/oauth-model-alias', element: <AuthFilesOAuthModelAliasEditPage /> },
   { path: '/oauth', element: <OAuthPage /> },
   { path: '/quota', element: <QuotaPage /> },
-  { path: '/plugin-pages/:pluginId/:menuIndex', element: <PluginResourcePage /> },
-  { path: '/plugins', element: <PluginsPage /> },
-  { path: '/plugin-store', element: <PluginStorePage /> },
-  { path: '/plugins/*', element: <Navigate to="/plugins" replace /> },
+  ...(supportsPlugin
+    ? [
+        { path: '/plugin-pages/:pluginId/:menuIndex', element: <PluginResourcePage /> },
+        { path: '/plugins', element: <PluginsPage /> },
+        { path: '/plugin-store', element: <PluginStorePage /> },
+        { path: '/plugins/*', element: <Navigate to="/plugins" replace /> },
+      ]
+    : [
+        { path: '/plugin-pages/*', element: <Navigate to="/" replace /> },
+        { path: '/plugins/*', element: <Navigate to="/" replace /> },
+        { path: '/plugin-store', element: <Navigate to="/" replace /> },
+      ]),
   { path: '/config', element: <ConfigPage /> },
   { path: '/logs', element: <LogsPage /> },
   { path: '/system', element: <SystemPage /> },
@@ -36,5 +45,6 @@ const mainRoutes = [
 ];
 
 export function MainRoutes({ location }: { location?: Location }) {
-  return useRoutes(mainRoutes, location);
+  const supportsPlugin = useAuthStore((state) => state.supportsPlugin);
+  return useRoutes(createMainRoutes(supportsPlugin), location);
 }
diff --git a/src/services/api/client.ts b/src/services/api/client.ts
index af3b51c..5d907ba 100644
--- a/src/services/api/client.ts
+++ b/src/services/api/client.ts
@@ -8,6 +8,7 @@ import type { ApiClientConfig, ApiError } from '@/types';
 import {
   BUILD_DATE_HEADER_KEYS,
   CPA_BUILD_DATE_HEADER_KEYS,
+  CPA_SUPPORT_PLUGIN_HEADER_KEYS,
   CPA_VERSION_HEADER_KEYS,
   HOME_BUILD_DATE_HEADER_KEYS,
   HOME_VERSION_HEADER_KEYS,
@@ -87,6 +88,19 @@ class ApiClient {
     return null;
   }
 
+  private readBooleanHeader(
+    headers: Record<string, unknown> | undefined,
+    keys: string[]
+  ): boolean | null {
+    const value = this.readHeader(headers, keys);
+    if (value === null) return null;
+
+    const normalized = value.trim().toLowerCase();
+    if (['1', 'true', 'yes', 'on'].includes(normalized)) return true;
+    if (['0', 'false', 'no', 'off'].includes(normalized)) return false;
+    return null;
+  }
+
   /**
    * 设置请求/响应拦截器
    */
@@ -122,6 +136,7 @@ class ApiClient {
         const version = homeVersion || cpaVersion || this.readHeader(headers, VERSION_HEADER_KEYS);
         const buildDate =
           homeBuildDate || cpaBuildDate || this.readHeader(headers, BUILD_DATE_HEADER_KEYS);
+        const supportsPlugin = this.readBooleanHeader(headers, CPA_SUPPORT_PLUGIN_HEADER_KEYS);
         const runtimeKind: ServerRuntimeKind | null =
           homeVersion || homeBuildDate ? 'home' : cpaVersion || cpaBuildDate ? 'cpa' : null;
 
@@ -133,6 +148,13 @@ class ApiClient {
             })
           );
         }
+        if (supportsPlugin !== null) {
+          window.dispatchEvent(
+            new CustomEvent('server-plugin-support-update', {
+              detail: { supportsPlugin }
+            })
+          );
+        }
 
         return response;
       },
diff --git a/src/stores/useAuthStore.ts b/src/stores/useAuthStore.ts
index 1419a86..96fa315 100644
--- a/src/stores/useAuthStore.ts
+++ b/src/stores/useAuthStore.ts
@@ -29,6 +29,7 @@ interface AuthStoreState extends AuthState {
     runtimeKind?: ServerRuntimeKind | null
   ) => void;
   updateServerRuntimeKind: (runtimeKind: ServerRuntimeKind) => void;
+  updateServerPluginSupport: (supportsPlugin: boolean) => void;
   updateConnectionStatus: (status: ConnectionStatus, error?: string | null) => void;
 }
 
@@ -54,6 +55,7 @@ export const useAuthStore = create<AuthStoreState>()(
       serverVersion: null,
       serverBuildDate: null,
       serverRuntimeKind: 'unknown',
+      supportsPlugin: false,
       connectionStatus: 'disconnected',
       connectionError: null,
 
@@ -113,7 +115,8 @@ export const useAuthStore = create<AuthStoreState>()(
             connectionStatus: 'connecting',
             serverVersion: null,
             serverBuildDate: null,
-            serverRuntimeKind: 'unknown'
+            serverRuntimeKind: 'unknown',
+            supportsPlugin: false
           });
           useModelsStore.getState().clearCache();
 
@@ -169,6 +172,7 @@ export const useAuthStore = create<AuthStoreState>()(
           serverVersion: null,
           serverBuildDate: null,
           serverRuntimeKind: 'unknown',
+          supportsPlugin: false,
           connectionStatus: 'disconnected',
           connectionError: null
         });
@@ -186,6 +190,7 @@ export const useAuthStore = create<AuthStoreState>()(
         try {
           // 重新配置客户端
           apiClient.setConfig({ apiBase, managementKey });
+          set({ supportsPlugin: false });
 
           // 验证连接
           await useConfigStore.getState().fetchConfig();
@@ -201,7 +206,8 @@ export const useAuthStore = create<AuthStoreState>()(
         } catch {
           set({
             isAuthenticated: false,
-            connectionStatus: 'error'
+            connectionStatus: 'error',
+            supportsPlugin: false
           });
           return false;
         }
@@ -220,6 +226,10 @@ export const useAuthStore = create<AuthStoreState>()(
         set({ serverRuntimeKind: runtimeKind });
       },
 
+      updateServerPluginSupport: (supportsPlugin) => {
+        set({ supportsPlugin });
+      },
+
       // 更新连接状态
       updateConnectionStatus: (status, error = null) => {
         set({
@@ -273,4 +283,11 @@ if (typeof window !== 'undefined') {
         .updateServerVersion(detail.version || null, detail.buildDate || null, runtimeKind);
     }) as EventListener
   );
+
+  window.addEventListener(
+    'server-plugin-support-update',
+    ((e: CustomEvent) => {
+      useAuthStore.getState().updateServerPluginSupport(e.detail?.supportsPlugin === true);
+    }) as EventListener
+  );
 }
diff --git a/src/types/auth.ts b/src/types/auth.ts
index d967c0a..a382b44 100644
--- a/src/types/auth.ts
+++ b/src/types/auth.ts
@@ -19,6 +19,7 @@ export interface AuthState {
   serverVersion: string | null;
   serverBuildDate: string | null;
   serverRuntimeKind: ServerRuntimeKind;
+  supportsPlugin: boolean;
 }
 
 // 连接状态
diff --git a/src/utils/constants.ts b/src/utils/constants.ts
index 23830f8..f19632a 100644
--- a/src/utils/constants.ts
+++ b/src/utils/constants.ts
@@ -18,6 +18,7 @@ export const MANAGEMENT_API_PREFIX = '/v0/management';
 export const REQUEST_TIMEOUT_MS = 30 * 1000;
 export const CPA_VERSION_HEADER_KEYS = ['x-cpa-version'];
 export const CPA_BUILD_DATE_HEADER_KEYS = ['x-cpa-build-date'];
+export const CPA_SUPPORT_PLUGIN_HEADER_KEYS = ['x-cpa-support-plugin'];
 export const HOME_VERSION_HEADER_KEYS = ['x-cpa-home-version'];
 export const HOME_BUILD_DATE_HEADER_KEYS = ['x-cpa-home-build-date'];
 export const VERSION_HEADER_KEYS = [