diff --git a/src/components/SearchGrade.vue b/src/components/SearchGrade.vue
index 776d0fca522a9dd467701c2933ecad2557a5c9a6..289b3e18b04890552b4467a1ec93989246ef5965 100644
--- a/src/components/SearchGrade.vue
+++ b/src/components/SearchGrade.vue
@@ -189,13 +189,11 @@ function initFirstData() {
   })
   onUnmounted(() => {
     window.onresize = null
-    if (!state.searchValue) {
-      window.localStorage.removeItem('csdnUid')
+    if (state.searchValue) {
+      window.localStorage.setItem('csdnUid', state.searchValue)
     }
     else {
-      if (!state.searchValue) {
-        window.localStorage.setItem('csdnUid', state.searchValue)
-      }
+      window.localStorage.removeItem('csdnUid')
     }
   })
 }