diff --git a/src/field/README.md b/src/field/README.md
index 55e0da11f..0d847973c 100644
--- a/src/field/README.md
+++ b/src/field/README.md
@@ -242,7 +242,7 @@ Use `input-align` prop to align the input value
 | autosize | Textarea auto resize，can accpet an object,<br>e.g. { maxHeight: 100, minHeight: 50 } | *boolean \| object* | `false` |
 | left-icon | Left side icon name | *string* | - |
 | right-icon | Right side icon name | *string* | - |
-| rules `v2.5.0` | Form validation rules | *object[]* | - |
+| rules `v2.5.0` | Form validation rules | *Rule[]* | - |
 
 ### Events
 
diff --git a/src/field/README.zh-CN.md b/src/field/README.zh-CN.md
index 41f78687e..64bb26c37 100644
--- a/src/field/README.zh-CN.md
+++ b/src/field/README.zh-CN.md
@@ -261,7 +261,7 @@ export default {
 | autosize | 是否自适应内容高度，只对 textarea 有效，<br>可传入对象,如 { maxHeight: 100, minHeight: 50 }，<br>单位为`px` | *boolean \| object* | `false` |
 | left-icon | 左侧[图标名称](#/zh-CN/icon)或图片链接 | *string* | - |
 | right-icon | 右侧[图标名称](#/zh-CN/icon)或图片链接 | *string* | - |
-| rules `v2.5.0` | 表单校验规则，详见 [Form 组件](#/zh-CN/) | *object[]* | - |
+| rules `v2.5.0` | 表单校验规则，详见 [Form 组件](#/zh-CN/) | *Rule[]* | - |
 
 ### Events
 
diff --git a/src/form/README.md b/src/form/README.md
index e944c4e89..7a462f55e 100644
--- a/src/form/README.md
+++ b/src/form/README.md
@@ -413,6 +413,15 @@ export default {
 | validate-first | Whether to stop the validation when a rule fails | *boolean* | `false` |
 | validate-trigger `v2.5.2` | When to validate the form，can be set to `onChange`、`onSubmit` | *string* | `onBlur` |
 
+### Data Structure of Rule 
+
+| Key | Description | Type |
+|------|------|------|
+| message | Error message | *string* |
+| required | Whether to be a required field | *boolean* |
+| validator | Custom validator | *() => boolean \| Promise* |
+| trigger `v2.5.2` | When to validate the form，can be set to `onChange`、`onBlur` | *string* |
+
 ### Events
 
 | Event | Description | Arguments |
diff --git a/src/form/README.zh-CN.md b/src/form/README.zh-CN.md
index 54375a894..742e5dd2b 100644
--- a/src/form/README.zh-CN.md
+++ b/src/form/README.zh-CN.md
@@ -443,10 +443,21 @@ export default {
 | error-message-align | 错误提示文案对齐方式，可选值为 `center` `right` | *string* | `left` |
 | colon | 是否在 label 后面添加冒号 | *boolean* | *false* |
 | validate-first | 是否在某一项校验不通过时停止校验 | *boolean* | `false` |
-| validate-trigger `v2.5.2` | 表单校验触发时机，可选值为`onChange`、`onSubmit` | *string* | `onBlur` |
+| validate-trigger `v2.5.2` | 表单校验触发时机，可选值为`onChange` | *string* | `onBlur` |
 
 > 表单项的 API 参见：[Field 组件](#/zh-CN/field#api)
 
+### Rule 数据结构
+
+使用 Field 的`rules`属性可以定义校验规则，可选属性如下:
+
+| 键名 | 说明 | 类型 |
+|------|------|------|
+| message | 错误提示文案 | *string* |
+| required | 是否为必选字段 | *boolean* |
+| validator | 自定义校验函数 | *() => boolean \| Promise* |
+| trigger `v2.5.2` | 本项规则的校验触发时机，可选值为`onChange`、`onBlur` | *string* |
+
 ### Events
 
 | 事件名 | 说明 | 回调参数 |