diff --git a/src/area/README.md b/src/area/README.md
index 9a7ddfbee..9ba790bd7 100644
--- a/src/area/README.md
+++ b/src/area/README.md
@@ -85,7 +85,7 @@ Use [ref](https://vuejs.org/v2/api/#ref) to get Area instance and call instance
 
 | Name | Description | Attribute | Return value |
 |------|------|------|------|
-| reset | Reset all options by code | code: string | - |
+| reset | Reset all options by code | code?: string | - |
 
 ### areaList Data Structure
 
diff --git a/src/area/README.zh-CN.md b/src/area/README.zh-CN.md
index 3d9a82c10..e16850c1d 100644
--- a/src/area/README.zh-CN.md
+++ b/src/area/README.zh-CN.md
@@ -84,7 +84,7 @@ Vue.use(Area);
 
 | 方法名 | 说明 | 参数 | 返回值 |
 |------|------|------|------|
-| reset | 根据 code 重置所有选项，若不传 code，则重置到第一项 | code: string | - |
+| reset | 根据 code 重置所有选项，若不传 code，则重置到第一项 | code?: string | - |
 
 ### 省市区列表数据格式
 
diff --git a/src/area/index.js b/src/area/index.js
index 1783b0071..b2d1940dd 100644
--- a/src/area/index.js
+++ b/src/area/index.js
@@ -262,6 +262,7 @@ export default createComponent({
       return area;
     },
 
+    // @exposed-api
     reset(code) {
       this.code = code || '';
       this.setValues();
diff --git a/types/area.d.ts b/types/area.d.ts
new file mode 100644
index 000000000..61dfc4aac
--- /dev/null
+++ b/types/area.d.ts
@@ -0,0 +1,5 @@
+import { VanComponent } from './component';
+
+export class Area extends VanComponent {
+  reset(code?: string): void;
+}
diff --git a/types/index.d.ts b/types/index.d.ts
index 1faf69f55..923e4eccd 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -1,5 +1,7 @@
 import Vue from 'vue';
 import { VanComponent } from './component';
+import { AddressEdit } from './address-edit';
+import { Area } from './area';
 import { Toast } from './toast';
 import { Dialog } from './dialog';
 import { Notify } from './notify';
@@ -8,11 +10,9 @@ import { Lazyload } from './lazyload';
 import { ImagePreview } from './image-preview';
 
 export const version: string;
-export function install (vue: typeof Vue): void
+export function install(vue: typeof Vue): void;
 export class ActionSheet extends VanComponent {}
-
 export class AddressList extends VanComponent {}
-export class Area extends VanComponent {}
 export class Button extends VanComponent {}
 export class Card extends VanComponent {}
 export class Cell extends VanComponent {}
@@ -86,10 +86,12 @@ export class TreeSelect extends VanComponent {}
 export class Uploader extends VanComponent {}
 
 export {
-  Toast,
+  AddressEdit,
+  Area,
   Dialog,
-  Notify,
-  Locale,
+  ImagePreview,
   Lazyload,
-  ImagePreview
+  Locale,
+  Notify,
+  Toast
 };