diff --git a/components/back-top/demo/basic.md b/components/back-top/demo/basic.md
index 80bf3a146c..544b587925 100644
--- a/components/back-top/demo/basic.md
+++ b/components/back-top/demo/basic.md
@@ -19,7 +19,7 @@ import { BackTop } from 'antd';
 ReactDOM.render(
   <div>
     <BackTop />
-    向下滚动后，见右下角灰色按钮
+    Scroll down to see the bottom right blue button.
   </div>
 , mountNode);
 ````
diff --git a/components/back-top/demo/custom.md b/components/back-top/demo/custom.md
index 168db769ab..509232d1bf 100644
--- a/components/back-top/demo/custom.md
+++ b/components/back-top/demo/custom.md
@@ -33,7 +33,7 @@ ReactDOM.render(
     <BackTop style={{ bottom: 100 }}>
       <div style={style}>UP</div>
     </BackTop>
-    向下滚动后，见右下角蓝色按钮
+    Scroll down to see the bottom right blue button.
   </div>
 , mountNode);
 ````