diff --git a/vnpy/gateway/oes/oes_gateway.py b/vnpy/gateway/oes/oes_gateway.py
index dc5cea83..fe7219bb 100644
--- a/vnpy/gateway/oes/oes_gateway.py
+++ b/vnpy/gateway/oes/oes_gateway.py
@@ -4,7 +4,7 @@
 import hashlib
 import os
 from gettext import gettext as _
-from threading import Thread, Lock
+from threading import Lock, Thread
 
 from vnpy.trader.gateway import BaseGateway
 from vnpy.trader.object import (CancelRequest, OrderRequest,
diff --git a/vnpy/gateway/oes/oes_md.py b/vnpy/gateway/oes/oes_md.py
index 25b94fbb..19f3a38f 100644
--- a/vnpy/gateway/oes/oes_md.py
+++ b/vnpy/gateway/oes/oes_md.py
@@ -7,13 +7,12 @@ from threading import Thread
 from typing import Any, Callable, Dict
 
 from vnpy.api.oes.vnoes import MdsApiClientEnvT, MdsApi_DestoryAll, MdsApi_InitLogger, \
-    MdsApi_InitTcpChannel2, MdsApi_IsValidTcpChannel, MdsApi_LogoutAll, MdsApi_SetThreadPassword, \
+    MdsApi_InitTcpChannel2, MdsApi_LogoutAll, MdsApi_SetThreadPassword, \
     MdsApi_SetThreadUsername, MdsApi_SubscribeMarketData, MdsApi_WaitOnMsg, MdsL2StockSnapshotBodyT, \
     MdsMktDataRequestEntryT, MdsMktDataRequestReqBufT, MdsMktDataRequestReqT, MdsMktRspMsgBodyT, \
-    MdsStockSnapshotBodyT, SGeneralClientChannelT, SMsgHeadT, SPlatform_IsNegEpipe, cast, \
+    MdsStockSnapshotBodyT, SGeneralClientChannelT, SMsgHeadT, cast, \
     eMdsExchangeIdT, eMdsMktSubscribeFlagT, eMdsMsgTypeT, eMdsSecurityTypeT, eMdsSubscribeDataTypeT, \
-    eMdsSubscribeModeT, eMdsSubscribedTickExpireTypeT, eMdsSubscribedTickTypeT, eSMsgProtocolTypeT, \
-    SPlatform_IsNegEconnaborted
+    eMdsSubscribeModeT, eMdsSubscribedTickExpireTypeT, eMdsSubscribedTickTypeT, eSMsgProtocolTypeT
 
 from vnpy.gateway.oes.utils import create_remote_config, is_disconnected
 from vnpy.trader.constant import Exchange
diff --git a/vnpy/gateway/oes/oes_td.py b/vnpy/gateway/oes/oes_td.py
index a2240a2a..01b50dc6 100644
--- a/vnpy/gateway/oes/oes_td.py
+++ b/vnpy/gateway/oes/oes_td.py
@@ -9,14 +9,14 @@ from typing import Any, Callable, Dict
 
 from vnpy.api.oes.vnoes import OesApiClientEnvT, OesApiSubscribeInfoT, OesApi_DestoryAll, \
     OesApi_InitLogger, OesApi_InitOrdChannel2, OesApi_InitQryChannel2, OesApi_InitRptChannel2, \
-    OesApi_IsValidOrdChannel, OesApi_LogoutAll, OesApi_QueryCashAsset, \
+    OesApi_LogoutAll, OesApi_QueryCashAsset, \
     OesApi_QueryOptHolding, OesApi_QueryOption, OesApi_QueryOrder, OesApi_QueryStkHolding, \
     OesApi_QueryStock, OesApi_SendOrderCancelReq, OesApi_SendOrderReq, OesApi_SetCustomizedDriverId, \
     OesApi_SetThreadPassword, OesApi_SetThreadUsername, OesApi_WaitReportMsg, OesOrdCancelReqT, \
     OesOrdCnfmT, OesOrdRejectT, OesOrdReqT, OesQryCashAssetFilterT, OesQryCursorT, \
     OesQryOptionFilterT, OesQryOrdFilterT, OesQryStkHoldingFilterT, OesQryStockFilterT, \
     OesRspMsgBodyT, OesStockBaseInfoT, OesTrdCnfmT, SGeneralClientChannelT, SMSG_PROTO_BINARY, \
-    SMsgHeadT, SPlatform_IsNegEpipe, cast, eOesBuySellTypeT, eOesMarketIdT, eOesMsgTypeT, \
+    SMsgHeadT, cast, eOesBuySellTypeT, eOesMarketIdT, eOesMsgTypeT, \
     eOesOrdStatusT, eOesOrdTypeShT, eOesOrdTypeSzT, eOesSubscribeReportTypeT
 
 from vnpy.gateway.oes.error_code import error_to_str
diff --git a/vnpy/gateway/oes/utils.py b/vnpy/gateway/oes/utils.py
index 436e9e5e..5bb76255 100644
--- a/vnpy/gateway/oes/utils.py
+++ b/vnpy/gateway/oes/utils.py
@@ -1,6 +1,6 @@
 import os
 
-from vnpy.api.oes.vnoes import SGeneralClientRemoteCfgT, SGeneralClientAddrInfoT
+from vnpy.api.oes.vnoes import SGeneralClientRemoteCfgT
 
 mydir = os.path.dirname(__file__)
 config_template_path = os.path.join(mydir, "config_template.ini")