diff --git a/nacos/client.py b/nacos/client.py
index ff527ad..e8d822a 100644
--- a/nacos/client.py
+++ b/nacos/client.py
@@ -15,6 +15,7 @@
 
 from multiprocessing import Process, Manager, Queue, pool
 from threading import RLock, Thread
+from multiprocessing import RLock as PRLock
 
 try:
     # python3.6
@@ -251,13 +252,19 @@ def __init__(self, server_addresses, endpoint=None, namespace=None, ak=None, sk=
         self.username = username
         self.password = password
 
-        self.server_list_lock = RLock()
+        if platform.system() == "windows":
+            self.server_list_lock = RLock()
+        else:
+            self.server_list_lock = PRLock()
         self.server_offset = 0
 
         self.watcher_mapping = dict()
         self.subscribed_local_manager = SubscribedLocalManager()
         self.subscribe_timer_manager = NacosTimerManager()
-        self.pulling_lock = RLock()
+        if platform.system() == "windows":
+            self.pulling_lock = RLock()
+        else:
+            self.pulling_lock = PRLock()
         self.puller_mapping = None
         self.notify_queue = None
         self.callback_tread_pool = None
@@ -1163,6 +1170,17 @@ def stop_subscribe(self):
         """
         self.subscribe_timer_manager.stop()
 
+    def __getstate__(self):
+        self_dict = self.__dict__.copy()
+        # pool object cannot be passed
+        del self_dict['callback_tread_pool']
+        # weak-ref object cannot be pickled
+        del self_dict['process_mgr']
+        return self_dict
+
+    def __setstate__(self, state):
+        self.__dict__.update(state)
+
 
 if DEBUG:
     NacosClient.set_debugging()