diff --git a/frontend/src/views/CanvasView.vue b/frontend/src/views/CanvasView.vue
index a4cf9aa..b18de36 100644
--- a/frontend/src/views/CanvasView.vue
+++ b/frontend/src/views/CanvasView.vue
@@ -1045,6 +1045,8 @@ const saveLabel = computed(() => ({
   background: var(--app-bg);
 }
 .cv-top {
+  position: relative;
+  z-index: 20; /* 下拉面板不能被舞台盖住 */
   display: flex;
   align-items: center;
   justify-content: space-between;