diff --git a/style/components/button.less b/style/components/button.less
index 4fb5d5ca8292ff5b469834de8b682c58fc051dd6..f4fedfacbf5de4c676464bdb279e016552f6de30 100644
--- a/style/components/button.less
+++ b/style/components/button.less
@@ -24,6 +24,10 @@
     .@{btnPrefixClass}-group &:last-child:not(:first-child) {
       border-left-color: #00abea;
     }
+
+    .@{btnPrefixClass}-group & + .@{btnPrefixClass} {
+      border-left-color: @btn-primary-border;
+    }
   }
 
   &-ghost {