diff --git a/vn.trader/vtEngine.py b/vn.trader/vtEngine.py
index 45b7e709..70d24eda 100644
--- a/vn.trader/vtEngine.py
+++ b/vn.trader/vtEngine.py
@@ -208,7 +208,8 @@ class MainEngine(object):
             host, port = loadMongoSetting()
                 
             try:
-                self.dbClient = MongoClient(host, port)
+                self.dbClient = MongoClient(host, port, serverSelectionTimeoutMS=3000)
+                self.dbClient.server_info()
                 self.writeLog(u'MongoDB连接成功')
             except ConnectionFailure:
                 self.writeLog(u'MongoDB连接失败')
@@ -349,4 +350,4 @@ class DataEngine(object):
         self.eventEngine.register(EVENT_ORDER, self.updateOrder)
         
     
-    
\ No newline at end of file
+