diff --git a/python/paddle_serving_server/util.py b/python/paddle_serving_server/util.py
index 85c9341c7848631394d348521131c3e0ae1455d7..8062d9a70b220d1863ab8b079a1d13259495bb64 100644
--- a/python/paddle_serving_server/util.py
+++ b/python/paddle_serving_server/util.py
@@ -16,6 +16,7 @@ import signal
 import os
 import time
 import json
+import platform
 from paddle_serving_server.env import CONF_HOME
 
 
@@ -91,7 +92,10 @@ def dump_pid_file(portList, model):
        dump_pid_file([9494, 10082], 'serve')
     '''
     pid = os.getpid()
-    gid = os.getpgid(pid)
+    if platform.system() == "Windows":
+        gid = pid
+    else:
+        gid = os.getpgid(pid)      
     pidInfoList = []
     filepath = os.path.join(CONF_HOME, "ProcessInfo.json")
     if os.path.exists(filepath):