diff --git a/Service/Car/Codec/Decoder.cs b/Service/Car/Codec/Decoder.cs
index e09bab5..a8dc698 100644
--- a/Service/Car/Codec/Decoder.cs
+++ b/Service/Car/Codec/Decoder.cs
@@ -1,8 +1,10 @@
-using DotNetty.Buffers;
+using Dm.util;
+using DotNetty.Buffers;
 using DotNetty.Codecs;
 using DotNetty.Transport.Channels;
 using HybirdFrameworkCore.Utils;
 using log4net;
+using Newtonsoft.Json;
 using Service.Car.Common;
 using Service.Car.Msg;
 using Service.Car.Msg.Car.Req;
@@ -59,7 +61,8 @@ public class Decoder : ByteToMessageDecoder
         byte[] data = new byte[length];
         buffer.ReadBytes(data);
 
-        return data[5] switch
+
+        BaseMsg msg = data[5] switch
         {
             0x01 => ModelConvert.Decode<ElecMsg>(data),
             0x03 => ModelConvert.Decode<HeartBeatMsg>(data),
@@ -69,6 +72,9 @@ public class Decoder : ByteToMessageDecoder
             0x12 => ModelConvert.Decode<SetParamMsgResp>(data),
             _ => new BaseMsg()
         };
+        Log.Info($"receive original ={BitUtls.BytesToHexStr(data)} , data={JsonConvert.SerializeObject(msg)}");
+
+        return msg;
     }
 
     private IByteBuffer? FindDelimiter(IByteBuffer buffer)
diff --git a/Service/Car/Handler/ElecMsgHandler.cs b/Service/Car/Handler/ElecMsgHandler.cs
index 0e54d2d..b3741e2 100644
--- a/Service/Car/Handler/ElecMsgHandler.cs
+++ b/Service/Car/Handler/ElecMsgHandler.cs
@@ -2,6 +2,7 @@
 using HybirdFrameworkCore.Autofac.Attribute;
 using HybirdFrameworkDriver.Session;
 using log4net;
+using Newtonsoft.Json;
 using Service.Car.Msg.Car.Req;
 using Service.Car.Msg.Host.Resp;
 using Service.Car.Server;
@@ -24,8 +25,8 @@ public class ElecMsgHandler : SimpleChannelInboundHandler<ElecMsg>, IBaseHandler
     /// <exception cref="NotImplementedException"></exception>
     protected override void ChannelRead0(IChannelHandlerContext ctx, ElecMsg msg)
     {
-        Log.Info($"receive ElecMsg = {msg}");
-        IoSession? ioSession = CarServerMgr.CarServer?.SessionMgr.GetSession(msg.CarNo);
+        Log.Info($"receive ElecMsg = {JsonConvert.SerializeObject(msg)}");
+        IoSession? ioSession = SessionMgr.GetSession(msg.CarNo);
 
         ioSession?.BusinessMap.AddOrUpdate("ElecMsg", msg, ((s, o) => msg));
         ioSession?.BusinessMap.AddOrUpdate("Connected", true, ((s, o) => true));
diff --git a/Service/Car/Handler/HeartBeatMsgHandler.cs b/Service/Car/Handler/HeartBeatMsgHandler.cs
index 1f3f0f8..1bcdb63 100644
--- a/Service/Car/Handler/HeartBeatMsgHandler.cs
+++ b/Service/Car/Handler/HeartBeatMsgHandler.cs
@@ -2,6 +2,7 @@
 using HybirdFrameworkCore.Autofac.Attribute;
 using HybirdFrameworkDriver.Session;
 using log4net;
+using Newtonsoft.Json;
 using Service.Car.Msg.Car.Req;
 using Service.Car.Msg.Host.Resp;
 using Service.Car.Server;
@@ -26,8 +27,8 @@ public class HeartBeatMsgHandler : SimpleChannelInboundHandler<HeartBeatMsg>, IB
     protected override void ChannelRead0(IChannelHandlerContext ctx, HeartBeatMsg msg)
     {
 
-        Log.Info($"receive HeartBeatMsg = {msg}");
-        IoSession? ioSession = CarServerMgr.CarServer?.SessionMgr.GetSession(ctx.Channel.Id.ToString());
+        Log.Info($"receive HeartBeatMsg = {JsonConvert.SerializeObject(msg)}");
+        IoSession? ioSession = SessionMgr.GetSession(ctx.Channel.Id.ToString());
         if (ioSession != null && ioSession.Key != msg.CarNo)
         {
             CarServerMgr.CarServer?.SessionMgr.ChangeSessionKey(ioSession, msg.CarNo);
diff --git a/Service/Car/Handler/LockMsgRespHandler.cs b/Service/Car/Handler/LockMsgRespHandler.cs
index 7ee18dc..591232d 100644
--- a/Service/Car/Handler/LockMsgRespHandler.cs
+++ b/Service/Car/Handler/LockMsgRespHandler.cs
@@ -1,6 +1,7 @@
 using DotNetty.Transport.Channels;
 using HybirdFrameworkCore.Autofac.Attribute;
 using log4net;
+using Newtonsoft.Json;
 using Service.Car.Msg.Car.Resp;
 using Service.Car.Msg.Host.Req;
 using Service.Car.Server;
@@ -26,7 +27,7 @@ public class LockMsgRespHandler : SimpleChannelInboundHandler<LockMsgResp>, IBas
     {
         LockMsg? lockMsg = CarServerMgr.CarServer.LockMsgPair.Req;
 
-        Log.Info($"receive LockMsgResp = {msg}, lockMsg={lockMsg}");
+        Log.Info($"receive LockMsgResp = {JsonConvert.SerializeObject(msg)}, lockMsg={JsonConvert.SerializeObject(lockMsg)}");
         if (lockMsg != null && lockMsg.CarNo == msg.CarNo)
         {
             CarServerMgr.CarServer.LockMsgPair.SetResp(msg);
diff --git a/Service/Car/Handler/SetParamMsgRespHandler.cs b/Service/Car/Handler/SetParamMsgRespHandler.cs
index 9a7efad..619e201 100644
--- a/Service/Car/Handler/SetParamMsgRespHandler.cs
+++ b/Service/Car/Handler/SetParamMsgRespHandler.cs
@@ -1,6 +1,7 @@
 using DotNetty.Transport.Channels;
 using HybirdFrameworkCore.Autofac.Attribute;
 using log4net;
+using Newtonsoft.Json;
 using Service.Car.Msg.Car.Resp;
 using Service.Car.Server;
 
@@ -22,7 +23,7 @@ public class SetParamMsgRespHandler : SimpleChannelInboundHandler<SetParamMsgRes
     /// <exception cref="NotImplementedException"></exception>
     protected override void ChannelRead0(IChannelHandlerContext ctx, SetParamMsgResp msg)
     {
-        Log.Info($"receive SetParamMsgResp = {msg}");
+        Log.Info($"receive SetParamMsgResp = {JsonConvert.SerializeObject(msg)}");
         CarServerMgr.CarServer.SetParamMsgPair.SetResp(msg);
     }
 }
diff --git a/Service/Car/Handler/SettleConfirmMsgRespHandler.cs b/Service/Car/Handler/SettleConfirmMsgRespHandler.cs
index f2d024b..3f31198 100644
--- a/Service/Car/Handler/SettleConfirmMsgRespHandler.cs
+++ b/Service/Car/Handler/SettleConfirmMsgRespHandler.cs
@@ -1,6 +1,7 @@
 using DotNetty.Transport.Channels;
 using HybirdFrameworkCore.Autofac.Attribute;
 using log4net;
+using Newtonsoft.Json;
 using Service.Car.Msg.Car.Resp;
 using Service.Car.Server;
 
@@ -23,7 +24,7 @@ public class SettleConfirmMsgRespHandler : SimpleChannelInboundHandler<SettleCon
     /// <exception cref="NotImplementedException"></exception>
     protected override void ChannelRead0(IChannelHandlerContext ctx, SettleConfirmMsgResp msg)
     {
-        Log.Info($"receive SettleConfirmMsgResp = {msg}");
+        Log.Info($"receive SettleConfirmMsgResp = {JsonConvert.SerializeObject(msg)}");
         CarServerMgr.CarServer.SettleConfirmMsgPair.SetResp(msg);
     }
 }
diff --git a/Service/Car/Handler/UnLockMsgRespHandler.cs b/Service/Car/Handler/UnLockMsgRespHandler.cs
index a35cbf4..a67b707 100644
--- a/Service/Car/Handler/UnLockMsgRespHandler.cs
+++ b/Service/Car/Handler/UnLockMsgRespHandler.cs
@@ -1,6 +1,7 @@
 using DotNetty.Transport.Channels;
 using HybirdFrameworkCore.Autofac.Attribute;
 using log4net;
+using Newtonsoft.Json;
 using Service.Car.Msg.Car.Resp;
 using Service.Car.Msg.Host.Req;
 using Service.Car.Server;
@@ -25,7 +26,7 @@ public class UnLockMsgRespHandler : SimpleChannelInboundHandler<UnLockMsgResp>,
     protected override void ChannelRead0(IChannelHandlerContext ctx, UnLockMsgResp msg)
     {
         UnLockMsg? unLockMsg = CarServerMgr.CarServer.UnLockMsgPair.Req;
-        Log.Info($"receive UnLockMsgResp = {msg} unLockMsg={unLockMsg}");
+        Log.Info($"receive UnLockMsgResp = {JsonConvert.SerializeObject(msg)} unLockMsg={JsonConvert.SerializeObject(unLockMsg)}");
         if (unLockMsg != null && unLockMsg.CarNo == msg.CarNo)
         {
             CarServerMgr.CarServer.UnLockMsgPair.SetResp(msg);