diff --git a/components/radio/style/index.less b/components/radio/style/index.less
index 2dfb9ad3e4..19cf31fb2c 100644
--- a/components/radio/style/index.less
+++ b/components/radio/style/index.less
@@ -128,6 +128,7 @@ span.@{radio-prefix-cls} + * {
   border-left: 0;
   background: @radio-button-bg;
   padding: 0 16px;
+  position: relative;
 
   a {
     color: @radio-button-color;