diff --git a/db_transfer.py b/db_transfer.py
index b4d596e..18423e1 100644
--- a/db_transfer.py
+++ b/db_transfer.py
@@ -129,6 +129,10 @@ class DbTransfer(object):
 				if name in row:
 					cfg[name] = row[name]
 
+			for name in cfg.keys():
+				if hasattr(cfg[name], 'encode'):
+					cfg[name] = cfg[name].encode('utf-8')
+
 			if port not in cur_servers:
 				cur_servers[port] = passwd
 			else:
@@ -141,13 +145,13 @@ class DbTransfer(object):
 					ServerPool.get_instance().cb_del_server(port)
 				else:
 					cfgchange = False
-					if (port in ServerPool.get_instance().tcp_servers_pool):
+					if port in ServerPool.get_instance().tcp_servers_pool:
 						relay = ServerPool.get_instance().tcp_servers_pool[port]
 						for name in ['password', 'method', 'obfs', 'protocol']:
 							if name in cfg and cfg[name] != relay._config[name]:
 								cfgchange = True
 								break;
-					if (port in ServerPool.get_instance().tcp_ipv6_servers_pool):
+					if not cfgchange and port in ServerPool.get_instance().tcp_ipv6_servers_pool:
 						relay = ServerPool.get_instance().tcp_ipv6_servers_pool[port]
 						for name in ['password', 'method', 'obfs', 'protocol']:
 							if name in cfg and cfg[name] != relay._config[name]:
@@ -162,7 +166,7 @@ class DbTransfer(object):
 			elif allow and ServerPool.get_instance().server_run_status(port) is False:
 				#new_servers[port] = passwd
 				logging.info('db start server at port [%s] pass [%s]' % (port, passwd))
-				ServerPool.get_instance().new_server(port, passwd, cfg)
+				ServerPool.get_instance().new_server(port, cfg)
 
 		for row in last_rows:
 			if row['port'] in cur_servers:
@@ -177,7 +181,7 @@ class DbTransfer(object):
 			for port in new_servers.keys():
 				passwd, cfg = new_servers[port]
 				logging.info('db start server at port [%s] pass [%s]' % (port, passwd))
-				ServerPool.get_instance().new_server(port, passwd, cfg)
+				ServerPool.get_instance().new_server(port, cfg)
 
 	@staticmethod
 	def del_servers():
diff --git a/server_pool.py b/server_pool.py
index f0529a5..63a8f16 100644
--- a/server_pool.py
+++ b/server_pool.py
@@ -106,7 +106,7 @@ class ServerPool(object):
 				return False
 		return True
 
-	def new_server(self, port, password, user_config):
+	def new_server(self, port, user_config):
 		ret = True
 		port = int(port)
 		ipv6_ok = False
@@ -122,7 +122,6 @@ class ServerPool(object):
 					a_config['server_ipv6'] = a_config['server_ipv6'][1:-1]
 				a_config['server'] = a_config['server_ipv6']
 				a_config['server_port'] = port
-				a_config['password'] = password
 				a_config['max_connect'] = 128
 				try:
 					logging.info("starting server at [%s]:%d" % (a_config['server'], port))
@@ -148,7 +147,6 @@ class ServerPool(object):
 				a_config = self.config.copy()
 				a_config.update(user_config)
 				a_config['server_port'] = port
-				a_config['password'] = password
 				a_config['max_connect'] = 128
 				try:
 					logging.info("starting server at %s:%d" % (a_config['server'], port))