diff --git a/packages/components/dialog/src/dialog.vue b/packages/components/dialog/src/dialog.vue
index cc1a9221dc..3f05e083c9 100644
--- a/packages/components/dialog/src/dialog.vue
+++ b/packages/components/dialog/src/dialog.vue
@@ -89,6 +89,7 @@ const {
   style,
   handleClose,
   rendered,
+  zIndex,
 } = dialog
 
 provide(elDialogInjectionKey, {