diff --git a/mini-program/src/pages/onboarding/index.vue b/mini-program/src/pages/onboarding/index.vue
index d73a70d..f992f0f 100644
--- a/mini-program/src/pages/onboarding/index.vue
+++ b/mini-program/src/pages/onboarding/index.vue
@@ -321,6 +321,8 @@ const handleTagLibraryUpdated = (payload) => {
 }
 
 onShow(() => {
+  // 防止 onShow 多次触发导致重复注册
+  uni.$off('tag-library-updated', handleTagLibraryUpdated)
   uni.$on('tag-library-updated', handleTagLibraryUpdated)
 })