diff --git a/components/menu/style/index.less b/components/menu/style/index.less
index 891cd1814e..9fc218a604 100644
--- a/components/menu/style/index.less
+++ b/components/menu/style/index.less
@@ -218,6 +218,7 @@
         right: 0;
         bottom: 0;
         left: 0;
+        z-index: -1;
         width: 100%;
         height: 100%;
         opacity: 0.0001;