diff --git a/nanobot/channels/dingtalk.py b/nanobot/channels/dingtalk.py
index d15896f..10b6b98 100644
--- a/nanobot/channels/dingtalk.py
+++ b/nanobot/channels/dingtalk.py
@@ -556,7 +556,7 @@ class DingTalkChannel(BaseChannel):
             download_dir = get_media_dir("dingtalk") / sender_id
             download_dir.mkdir(parents=True, exist_ok=True)
             file_path = download_dir / filename
-            await asyncio.to_thread(file_path.write_bytes, file_resp.content)
+            file_path.write_bytes(file_resp.content)
             logger.info("DingTalk file saved: {}", file_path)
             return str(file_path)
         except Exception as e: