diff --git a/pages/course/index.vue b/pages/course/index.vue
index fcd6b67..94cca6e 100644
--- a/pages/course/index.vue
+++ b/pages/course/index.vue
@@ -326,7 +326,7 @@ const handleFirstLevelClick = (item: string) => {
 	if(!uni.getStorageSync('token')) return
 	selectedFirstLevel.value = item
   if (item === '医学') {
-    medicineMenuSkeletonRef.value.reload()
+    medicineMenuSkeletonRef.value?.reload()
   } else {
     menuSkeletonRef.value?.reload()
   }