diff --git a/packages/editor-skeleton/src/layouts/workbench.less b/packages/editor-skeleton/src/layouts/workbench.less
index 6c7348cfd..a6f3a9359 100644
--- a/packages/editor-skeleton/src/layouts/workbench.less
+++ b/packages/editor-skeleton/src/layouts/workbench.less
@@ -331,6 +331,7 @@ body {
       flex: 1;
       display: flex;
       flex-direction: column;
+      z-index: 10;
       .lc-toolbar {
         height: var(--toolbar-height);
         background-color: var(--color-pane-background);