diff --git a/components/form/v3.en-US.md b/components/form/v3.en-US.md
index 0c595e798d..605d48ddc0 100644
--- a/components/form/v3.en-US.md
+++ b/components/form/v3.en-US.md
@@ -102,7 +102,7 @@ class Demo extends React.Component {
 
   render() {
     return (
-      <Form ref={formRef}>
+      <Form ref={this.formRef}>
         <Form.Item name="username" rules={[{ required: true }]}>
           <Input />
         </Form.Item>
diff --git a/components/form/v3.zh-CN.md b/components/form/v3.zh-CN.md
index 9a43cfbe9d..a15febbe08 100644
--- a/components/form/v3.zh-CN.md
+++ b/components/form/v3.zh-CN.md
@@ -104,7 +104,7 @@ class Demo extends React.Component {
 
   render() {
     return (
-      <Form ref={formRef}>
+      <Form ref={this.formRef}>
         <Form.Item name="username" rules={[{ required: true }]}>
           <Input />
         </Form.Item>