diff --git a/components/auto-complete/index.en-US.md b/components/auto-complete/index.en-US.md
index 76223e7714..af15500952 100644
--- a/components/auto-complete/index.en-US.md
+++ b/components/auto-complete/index.en-US.md
@@ -27,7 +27,8 @@ const dataSource = ['12345', '23456', '34567'];
 | onChange | Called when select an option or input value change, or value of input is changed | function(value, label) | - |
 | onSelect | Called when a option is selected. param is option's value and option instance. | function(value, option) | -   |
 | disabled | Whether disabled select | boolean | false |
+| defaultActiveFirstOption | Whether active first option by default | boolean | true |
 | placeholder | placeholder of input | string | - |
 | children (for dataSource) | Data source for autocomplet | React.ReactElement<OptionProps> /  Array<React.ReactElement<OptionProps>> | - |
 | children (for customize input element) | customize input element | HTMLInputElement / HTMLTextAreaElement / React.ReactElement<InputProps> | `<Input />` |
-| filterOption | If true, filter options by input, if function, filter options against it. The function will receive two arguments, `inputValue` and `option`, if the function returns `true`, the option will be included in the filtered set; Otherwise, it will be excluded. | boolean or function(inputValue, option) | true     |
\ No newline at end of file
+| filterOption | If true, filter options by input, if function, filter options against it. The function will receive two arguments, `inputValue` and `option`, if the function returns `true`, the option will be included in the filtered set; Otherwise, it will be excluded. | boolean or function(inputValue, option) | true     |
diff --git a/components/auto-complete/index.zh-CN.md b/components/auto-complete/index.zh-CN.md
index 2caeba03ec..f9219fbf6e 100644
--- a/components/auto-complete/index.zh-CN.md
+++ b/components/auto-complete/index.zh-CN.md
@@ -28,6 +28,7 @@ const dataSource = ['12345', '23456', '34567'];
 | onChange | 选中 option，或 input 的 value 变化时，调用此函数 | function(value) | 无 |
 | onSelect | 被选中时调用，参数为选中项的 value 值	| function(value, option)	| 无 |
 | disabled | 是否禁用 | boolean | false |
+| defaultActiveFirstOption | 是否默认高亮第一个选项。 | boolean | true
 | placeholder | 输入框提示 | string | - |
 | children (自动完成的数据源) | 自动完成的数据源 | React.ReactElement<OptionProps> / Array<React.ReactElement<OptionProps>> | - |
 | children (自定义输入框) | 自定义输入框 |  HTMLInputElement / HTMLTextAreaElement / React.ReactElement<InputProps> | `<Input />` |