diff --git a/apps/rmbg/api.py b/apps/rmbg/api.py
index b52be95..fce50f6 100644
--- a/apps/rmbg/api.py
+++ b/apps/rmbg/api.py
@@ -38,15 +38,22 @@ async def remove_background_batch(data: dict, request: Request):
 @jingrow_api_verify_and_billing(api_name=settings.api_name)
 async def remove_background_file(file: UploadFile = File(...), request: Request = None):
     """
-    从上传的文件移除背景
+    从上传的文件移除背景（流式返回）
     
     Args:
         file: 上传的图片文件
         request: FastAPI 请求对象
         
     Returns:
-        处理后的图片内容
+        流式响应，包含处理后的图片内容
     """
     content = await file.read()
-    result = await service.remove_background_from_file(content)
-    return result
+    
+    async def process_and_stream():
+        result = await service.remove_background_from_file(content)
+        yield json.dumps(result) + "\n"
+    
+    return StreamingResponse(
+        process_and_stream(),
+        media_type="application/x-ndjson"
+    )