diff --git a/vnpy/rpc/vnrpc.py b/vnpy/rpc/vnrpc.py
index c3a979c9..e9325743 100644
--- a/vnpy/rpc/vnrpc.py
+++ b/vnpy/rpc/vnrpc.py
@@ -38,8 +38,8 @@ class RpcObject(object):
     def __init__(self):
         """Constructor"""
         # 默认使用msgpack作为序列化工具
-        #self.useMsgpack()
-        self.usePickle()
+        self.useMsgpack()
+        #self.usePickle()
     
     #----------------------------------------------------------------------
     def pack(self, data):
@@ -84,18 +84,22 @@ class RpcObject(object):
     #----------------------------------------------------------------------
     def useJson(self):
         """使用json作为序列化工具"""
+        print 'Use Json Serialization'
+
         self.pack = self.__jsonPack
         self.unpack = self.__jsonUnpack
         
     #----------------------------------------------------------------------
     def useMsgpack(self):
         """使用msgpack作为序列化工具"""
+        print 'Use MsgPack Serialization'
         self.pack = self.__msgpackPack
         self.unpack = self.__msgpackUnpack
         
     #----------------------------------------------------------------------
     def usePickle(self):
         """使用cPickle作为序列化工具"""
+        print 'Use Pickle Serialization'
         self.pack = self.__picklePack
         self.unpack = self.__pickleUnpack
 
@@ -185,7 +189,7 @@ class RpcServer(RpcObject):
         """
         # 序列化数据
         datab = self.pack(data)
-        
+        topic = topic.encode('utf-8')
         # 通过广播socket发送数据
         self.__socketPUB.send_multipart([topic, datab])
         
@@ -194,7 +198,6 @@ class RpcServer(RpcObject):
         """注册函数"""
         self.__functions[func.__name__] = func
 
-
 ########################################################################
 class RpcClient(RpcObject):
     """RPC客户端"""
@@ -276,7 +279,8 @@ class RpcClient(RpcObject):
             
             # 从订阅socket收取广播数据
             topic, datab = self.__socketSUB.recv_multipart()
-            
+            topic = topic.decode("utf-8")
+
             # 序列化解包
             data = self.unpack(datab)
 
@@ -295,9 +299,9 @@ class RpcClient(RpcObject):
         
         可以使用topic=''来订阅所有的主题
         """
+        topic = topic.encode('utf-8')
         self.__socketSUB.setsockopt(zmq.SUBSCRIBE, topic)
-        
-    
+
 
 ########################################################################
 class RemoteException(Exception):