diff --git a/docs/markdown/en-US/radio.md b/docs/markdown/en-US/radio.md
index 9e98f9e00..e31bcc2bf 100644
--- a/docs/markdown/en-US/radio.md
+++ b/docs/markdown/en-US/radio.md
@@ -2,8 +2,9 @@
 
 ### Install
 ``` javascript
-import { Radio } from 'vant';
+import { RadioGroup, Radio } from 'vant';
 
+Vue.use(RadioGroup);
 Vue.use(Radio);
 ```
 
diff --git a/docs/markdown/zh-CN/radio.md b/docs/markdown/zh-CN/radio.md
index ac0fcff9a..4946eddc3 100644
--- a/docs/markdown/zh-CN/radio.md
+++ b/docs/markdown/zh-CN/radio.md
@@ -2,8 +2,9 @@
 
 ### 使用指南
 ``` javascript
-import { Radio } from 'vant';
+import { RadioGroup, Radio } from 'vant';
 
+Vue.use(RadioGroup);
 Vue.use(Radio);
 ```