diff --git a/Web/src/util/global/index.js b/Web/src/util/global/index.js
new file mode 100644
index 0000000..5415709
--- /dev/null
+++ b/Web/src/util/global/index.js
@@ -0,0 +1 @@
+export const EMPTY_ID = '00000000-0000-0000-0000-000000000000'
\ No newline at end of file
diff --git a/Web/src/views/main/index.vue b/Web/src/views/main/index.vue
index 6a7ff49..8a4d288 100644
--- a/Web/src/views/main/index.vue
+++ b/Web/src/views/main/index.vue
@@ -42,6 +42,8 @@ import Setting from './setting';
 import { setGlobal } from '@/common/login';
 import { APP_MENU_KEY } from '@/common/storage';
 
+import { EMPTY_ID } from '@/util/global';
+
 const getNewID = () => {
   return Math.random().toString(16).slice(2);
 };
@@ -260,9 +262,7 @@ export default {
         return m;
       };
 
-      const rootId = '00000000-0000-0000-0000-000000000000';
-
-      this.nav.menus = children[rootId] ? serialize(children[rootId]) : new Array();
+      this.nav.menus = children[EMPTY_ID] ? serialize(children[EMPTY_ID]) : new Array();
     },
   },
 };