diff --git a/lms/nladmin-ui/src/main.js b/lms/nladmin-ui/src/main.js
index e4e0e81..0d8e1f8 100644
--- a/lms/nladmin-ui/src/main.js
+++ b/lms/nladmin-ui/src/main.js
@@ -81,7 +81,11 @@ Vue.use(Element, {
 
 Vue.prototype.$langPre = {
   computedProp(suffix) {
-    return localStorage.getItem('lang') + '_' + suffix
+    let item = localStorage.getItem('lang');
+    if (item === null) {
+      item = 'zh'
+    }
+    return item + '_' + suffix
   }
 }