diff --git a/docs/ext-storage/dev.md b/docs/ext-storage/dev.md
index e0bab868d57193794bf81ac6f2f37bccd9749e90..cc14a25792404494305fccaa0067bf6af306237f 100644
--- a/docs/ext-storage/dev.md
+++ b/docs/ext-storage/dev.md
@@ -2009,6 +2009,24 @@ let base64 = urlsafeBase64Encode("test/a.jpg");
 console.log('base64: ', base64);
 ```
 
+### 私有文件如何使用图片处理?@privatehandle
+
+在调用 getTempFileURL 的时候，fileList 内带上图片处理参数即可
+
+**云端代码**
+
+```js
+const extStorageManager = uniCloud.getExtStorageManager({
+	provider: "qiniu",
+	domain: "example.com", // 域名地址
+});
+let res = extStorageManager.getTempFileURL({
+	fileList: ["qiniu://test.jpg?imageMogr2/thumbnail/!20p"], // 文件地址列表
+});
+console.log('getTempFileURL: ', res);
+return res;
+```
+
 ## 视频处理@videoshandle
 
 ### 音视频转码@video-transcode
@@ -2994,21 +3012,3 @@ module.exports = {
 [qshell-下载地址](https://github.com/qiniu/qshell/tree/master)
 
 [qshell-本地文件同步教程](https://github.com/qiniu/qshell/blob/master/docs/qupload.md)
-
-### 私有文件如何使用图片处理?@q6
-
-在调用 getTempFileURL 的时候，fileList 内带上图片处理参数即可
-
-**云端代码**
-
-```js
-const extStorageManager = uniCloud.getExtStorageManager({
-	provider: "qiniu",
-	domain: "example.com", // 域名地址
-});
-let res = extStorageManager.getTempFileURL({
-	fileList: ["qiniu://test.jpg?imageMogr2/thumbnail/!20p"], // 文件地址列表
-});
-console.log('getTempFileURL: ', res);
-return res;
-```
\ No newline at end of file