diff --git a/components/form/demo/form-controls.md b/components/form/demo/form-controls.md
index 669f184654..d2d7309790 100644
--- a/components/form/demo/form-controls.md
+++ b/components/form/demo/form-controls.md
@@ -75,11 +75,11 @@ React.render(
   <div className="ant-form-item ant-form-item-compact">
     <label className="col-6">ant-radio：</label>
     <div className="col-18">
-      <RadioGroup>
-      <Radio value="a" value={true}>A</Radio>
-      <Radio value="b" >B</Radio>
-      <Radio value="c" >C</Radio>
-      <Radio value="d">D</Radio>
+      <RadioGroup value={"b"}>
+        <Radio value="a">A</Radio>
+        <Radio value="b">B</Radio>
+        <Radio value="c">C</Radio>
+        <Radio value="d">D</Radio>
       </RadioGroup>
     </div>
   </div>
diff --git a/components/form/demo/horizontal-form.md b/components/form/demo/horizontal-form.md
index afd6ab79a4..fb9b5aafe6 100644
--- a/components/form/demo/horizontal-form.md
+++ b/components/form/demo/horizontal-form.md
@@ -34,8 +34,8 @@ React.render(
   <div className="ant-form-item ant-form-item-compact">
     <label  className="col-6" required>您的性别：</label>
     <div className="col-14">
-      <RadioGroup>
-        <Radio value="male" checked={true}>男的</Radio>
+      <RadioGroup value="male">
+        <Radio value="male">男的</Radio>
         <Radio value="female">女的</Radio>
       </RadioGroup>
     </div>