diff --git a/util/oss.py b/util/oss.py
index 265e3ed..d3832c6 100644
--- a/util/oss.py
+++ b/util/oss.py
@@ -1,5 +1,6 @@
 import logging
 import os
+import sys
 
 import requests
 from opentelemetry.trace import Status, StatusCode
@@ -70,7 +71,7 @@ def upload_to_oss(url, file_path):
     return False
 
 
-def download_from_oss(url, file_path, skip_if_exist=False):
+def download_from_oss(url, file_path, skip_if_exist=None):
     """
     使用签名URL下载文件到OSS
     :param skip_if_exist: 如果存在就不下载了
@@ -82,6 +83,11 @@ def download_from_oss(url, file_path, skip_if_exist=False):
     with tracer.start_as_current_span("download_from_oss") as span:
         span.set_attribute("file.url", url)
         span.set_attribute("file.path", file_path)
+        
+        # 如果skip_if_exist为None，则从启动参数中读取
+        if skip_if_exist is None:
+            skip_if_exist = 'skip_if_exist' in sys.argv
+        
         if skip_if_exist and os.path.exists(file_path):
             span.set_attribute("file.exist", True)
             span.set_attribute("file.size", os.path.getsize(file_path))