diff --git a/src/components/OnlineFile/index.vue b/src/components/OnlineFile/index.vue
index 03c4cb9..838cb37 100644
--- a/src/components/OnlineFile/index.vue
+++ b/src/components/OnlineFile/index.vue
@@ -42,6 +42,8 @@ export default {
     showModal(newVal) {
       if (!newVal) {
         this.codeUri = ''
+      } else {
+        this.zIndex = PopupManager.nextZIndex()
       }
     }
   },