diff --git a/zh-cn/application-dev/reference/apis/js-apis-fileAccess.md b/zh-cn/application-dev/reference/apis/js-apis-fileAccess.md
index 2f66868a47a28345d007b1320abbd349800f41d8..bfb90e73dcad839e75beaf336da7e06a82d84dae 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-fileAccess.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-fileAccess.md
@@ -1017,6 +1017,90 @@ access(sourceFileUri: string, callback: AsyncCallback<boolean>) : void;
};
```
+## FileAccessHelper.getThumbnail10+
+
+getThumbnail(uri: string, size: image.Size) : Promise<image.PixelMap>
+
+通过指定uri和尺寸获取媒体文件的Pixelmap对象,使用Promise异步回调。
+
+**系统能力**:SystemCapability.FileManagement.UserFileService
+
+**需要权限**:ohos.permission.FILE_ACCESS_MANAGER
+
+**参数:**
+
+| 参数名 | 类型 | 必填 | 说明 |
+| ------ | ----------------------------------- | ---- | ----------- |
+| uri | string | 是 | 媒体文件uri |
+| size | [image.Size](js-apis-image.md#size) | 是 | 缩略图尺寸 |
+
+**返回值:**
+
+| 类型 | 说明 |
+| :---------------------------- | :----------------- |
+| Promise<image.PixelMap> | 返回的Pixelmap对象 |
+
+**示例:**
+
+```js
+// 以媒体库uri为例
+// 示例代码targetUri表示Download目录下某个媒体文件(图片、音频、视频),该uri是对应的fileInfo中uri
+// 开发者应根据自己实际获取的uri进行开发
+let targetUri = "datashare:///media/image/100";
+let size = { width: 128, height: 128 };
+try {
+ // fileAccessHelper 参考 fileAccess.createFileAccessHelper 示例代码获取
+ let pixelMap = await fileAccessHelper.getThumbnail(targetUri, size);
+ let imageInfo = await pixelMap.getImageInfo();
+ console.log("getThumbnail sucess, pixelMap.width: " + imageInfo.size.width);
+ console.log("getThumbnail sucess, pixelMap.height: " + imageInfo.size.height);
+} catch (error) {
+ console.error("getThumbnail failed, errCode:" + error.code + ", errMessage:" + error.message);
+};
+```
+
+## FileAccessHelper.getThumbnail10+
+
+ getThumbnail(uri: string, size: image.Size, callback: AsyncCallback<image.PixelMap>) : void
+
+通过指定uri和尺寸获取媒体文件的Pixelmap对象,使用callback异步回调。
+
+**系统能力**:SystemCapability.FileManagement.UserFileService
+
+**需要权限**:ohos.permission.FILE_ACCESS_MANAGER
+
+**参数:**
+
+| 参数名 | 类型 | 必填 | 说明 |
+| -------- | ----------------------------------- | ---- | ------------------ |
+| uri | string | 是 | 媒体文件uri |
+| size | [image.Size](js-apis-image.md#size) | 是 | 缩略图尺寸 |
+| callback | AsyncCallback<image.PixelMap> | 是 | 返回的Pixelmap对象 |
+
+**示例:**
+
+```js
+// 以媒体库uri为例
+// 示例代码targetUri表示Download目录下某个媒体文件(图片、音频、视频),该uri是对应的fileInfo中uri
+// 开发者应根据自己实际获取的uri进行开发
+let targetUri = "datashare:///media/image/100";
+let size = { width: 128, height: 128 };
+try {
+ // fileAccessHelper 参考 fileAccess.createFileAccessHelper 示例代码获取
+ fileAccessHelper.getThumbnail(targetUri, size, async(err, pixelMap) => {
+ if (err) {
+ console.error("Failed to getThumbnail in async, errCode:" + err.code + ", errMessage:" + err.message);
+ return;
+ }
+ let imageInfo = await pixelMap.getImageInfo();
+ console.log("getThumbnail sucess, pixelMap.width: " + imageInfo.size.width);
+ console.log("getThumbnail sucess, pixelMap.height: " + imageInfo.size.height);
+ });
+} catch (error) {
+ console.error("getThumbnail failed, errCode:" + error.code + ", errMessage:" + error.message);
+};
+```
+
## RootIterator.next
next( ) : { value: RootInfo, done: boolean }