diff --git a/TOS_UPLOAD_INTEGRATION.md b/TOS_UPLOAD_INTEGRATION.md
index e0cdd33..11a7bb9 100644
--- a/TOS_UPLOAD_INTEGRATION.md
+++ b/TOS_UPLOAD_INTEGRATION.md
@@ -67,7 +67,7 @@
      "created": 1703123456,
      "data": {
        "task_id": "task_123",
-       "url": "https://your-domain.com/images/image-1703123456-abc123.webp",
+       "url": "https://your-domain.com/images/image-1703123456-abc123.png",
        "status": -1
      }
    }
@@ -115,7 +115,7 @@ TOS_ENDPOINT=tos-cn-beijing.volces.com
 
 ## 文件存储路径
 
-- **图片**: `images/image-{timestamp}-{random}.webp`
+- **图片**: `images/image-{timestamp}-{random}.png`
 - **视频**: `videos/video-{timestamp}-{random}.mp4`
 
 ## 错误处理
diff --git a/src/api/ImagesTaskCache.ts b/src/api/ImagesTaskCache.ts
index 0507c92..7c24976 100644
--- a/src/api/ImagesTaskCache.ts
+++ b/src/api/ImagesTaskCache.ts
@@ -83,9 +83,9 @@ export class ImagesTaskCache {
         for (const imageUrl of imageUrls) {
             try {
                 // 从URL获取文件名
-                const fileName = `image-${Date.now()}-${Math.random().toString(36).substr(2, 9)}.webp`;
+                const fileName = `image-${Date.now()}-${Math.random().toString(36).substr(2, 9)}.png`;
                 // 上传到TOS
-                const tosUrl = await TOSService.uploadFromUrl(imageUrl, `images/${fileName}`);
+                const tosUrl = await TOSService.uploadFromUrl(imageUrl, `jimeng_free/images/${fileName}`);
                 tosUrls.push(tosUrl);
                 logger.info(`图片上传到TOS成功: ${imageUrl} -> ${tosUrl}`);
             } catch (error) {
diff --git a/src/api/VideoTaskCache.ts b/src/api/VideoTaskCache.ts
index b5e0bdb..ddbea59 100644
--- a/src/api/VideoTaskCache.ts
+++ b/src/api/VideoTaskCache.ts
@@ -85,7 +85,7 @@ export class VideoTaskCache {
                 // 从URL获取文件名
                 const fileName = `video-${Date.now()}-${Math.random().toString(36).substr(2, 9)}.mp4`;
                 // 上传到TOS
-                const tosUrl = await TOSService.uploadFromUrl(videoUrl, `videos/${fileName}`);
+                const tosUrl = await TOSService.uploadFromUrl(videoUrl, `jimeng_free/videos/${fileName}`);
                 tosUrls.push(tosUrl);
                 logger.info(`视频上传到TOS成功: ${videoUrl} -> ${tosUrl}`);
             } catch (error) {
diff --git a/src/lib/services/TaskPollingService.ts b/src/lib/services/TaskPollingService.ts
index 9cf7134..e0db798 100644
--- a/src/lib/services/TaskPollingService.ts
+++ b/src/lib/services/TaskPollingService.ts
@@ -752,11 +752,11 @@ export class TaskPollingService {
         for (const url of urls) {
             try {
                 const fileName = taskType === 'image' 
-                    ? `image-${Date.now()}-${Math.random().toString(36).substr(2, 9)}.webp`
+                    ? `image-${Date.now()}-${Math.random().toString(36).substr(2, 9)}.png`
                     : `video-${Date.now()}-${Math.random().toString(36).substr(2, 9)}.mp4`;
                 
                 const folder = taskType === 'image' ? 'images' : 'videos';
-                const tosUrl = await TOSService.uploadFromUrl(url, `${folder}/${fileName}`);
+                const tosUrl = await TOSService.uploadFromUrl(url, `jimeng_free/${folder}/${fileName}`);
                 tosUrls.push(tosUrl);
                 
                 taskLog(`${taskType} uploaded to TOS: ${url} -> ${tosUrl}`);