diff --git a/src/components/SiderMenu/index.less b/src/components/SiderMenu/index.less
index fa0bd2ba..ede1e143 100644
--- a/src/components/SiderMenu/index.less
+++ b/src/components/SiderMenu/index.less
@@ -45,6 +45,9 @@
         color: @primary-color;
       }
     }
+    :global(.ant-menu-light) {
+      border-right-color: transparent;
+    }
   }
 }