diff --git a/cmdb-ui/src/style/global.less b/cmdb-ui/src/style/global.less
index 4c7c399..9d3685d 100644
--- a/cmdb-ui/src/style/global.less
+++ b/cmdb-ui/src/style/global.less
@@ -552,7 +552,7 @@ body {
   background-repeat: no-repeat !important;
   background-size: cover;
   .ant-menu-inline.ant-menu-sub {
-    background-color: inherit;
+    background-color: #001a4c;
   }
   .ant-menu-submenu-content .ant-menu-item,
   .ant-menu-item {