diff --git a/components/form/demo/register.md b/components/form/demo/register.md
index 51666495bc..3cce0d3eb4 100644
--- a/components/form/demo/register.md
+++ b/components/form/demo/register.md
@@ -164,7 +164,7 @@ class RegistrationForm extends React.Component {
           hasFeedback
         >
           {getFieldDecorator('nickname', {
-            rules: [{ required: true, message: 'Please input your nickname!' }],
+            rules: [{ required: true, message: 'Please input your nickname!', whitespace: true }],
           })(
             <Input />
           )}
diff --git a/components/form/index.en-US.md b/components/form/index.en-US.md
index 04c0601079..5e443a4f68 100644
--- a/components/form/index.en-US.md
+++ b/components/form/index.en-US.md
@@ -133,6 +133,7 @@ Property | Description | Type | Default Value
 message | validation error message | string | -
 type | built-in validation type, [available options](https://github.com/yiminghe/async-validator#type) | string | 'string'
 required | indicates whether field is required | boolean | `false`
+whitespace | treat required fields that only contain whitespace as errors | boolean | `false`
 len | validate an exact length of a field | number | -
 min | validate a min length of a field | number | -
 max | validate a max length of a field | number | -
diff --git a/components/form/index.zh-CN.md b/components/form/index.zh-CN.md
index aa6bb1419c..c28929757a 100644
--- a/components/form/index.zh-CN.md
+++ b/components/form/index.zh-CN.md
@@ -134,6 +134,7 @@ CustomizedForm = Form.create({})(CustomizedForm);
 message | 校验文案 | string | -
 type | 内建校验类型，[可选项](https://github.com/yiminghe/async-validator#type) | string | 'string'
 required | 是否必选 | boolean | `false`
+whitespace | 必选时，空格是否会被视为错误 | boolean | `false`
 len | 字段长度 | number | -
 min | 最小长度 | number | -
 max | 最大长度 | number | -