diff --git a/src/JT808.Protocol.Test/MessageBody/JT808_0x0700Test.cs b/src/JT808.Protocol.Test/MessageBody/JT808_0x0700Test.cs
index 2babe78..50eafb4 100644
--- a/src/JT808.Protocol.Test/MessageBody/JT808_0x0700Test.cs
+++ b/src/JT808.Protocol.Test/MessageBody/JT808_0x0700Test.cs
@@ -249,13 +249,13 @@ namespace JT808.Protocol.Test.MessageBody
             };
 
             var hex = JT808Serializer.Serialize(value).ToHexString();
-            Assert.Equal("000105557A050027003132333435363738393132333435363738D4C142313233343500000000D6D8D0CDBBF5B3B5000009", hex);
+            Assert.Equal("000105557A050029003132333435363738393132333435363738D4C142313233343500000000D6D8D0CDBBF5B3B50000000007", hex);
         }
 
         [Fact]
         public void Test_Deserilize_0x05()
         {
-            byte[] bytes = "000105557A050027003132333435363738393132333435363738D4C142313233343500000000D6D8D0CDBBF5B3B5000009".ToHexBytes();
+            byte[] bytes = "000105557A050029003132333435363738393132333435363738D4C142313233343500000000D6D8D0CDBBF5B3B50000000007".ToHexBytes();
             JT808_0x0700 value = JT808Serializer.Deserialize<JT808_0x0700>(bytes);
             Assert.Equal(1, value.ReplyMsgNum);
             var body = value.JT808CarDVRUpPackage.Bodies as JT808_CarDVR_Up_0x05;
diff --git a/src/JT808.Protocol/MessageBody/CarDVR/JT808_CarDVR_Up_0x05.cs b/src/JT808.Protocol/MessageBody/CarDVR/JT808_CarDVR_Up_0x05.cs
index 2380465..dddf320 100644
--- a/src/JT808.Protocol/MessageBody/CarDVR/JT808_CarDVR_Up_0x05.cs
+++ b/src/JT808.Protocol/MessageBody/CarDVR/JT808_CarDVR_Up_0x05.cs
@@ -54,8 +54,8 @@ namespace JT808.Protocol.MessageBody.CarDVR
             hex = reader.ReadVirtualArray(12);
             value.VehicleNo = reader.ReadString(12);
             writer.WriteString($"[{hex.ToArray().ToHexString()}]机动车号牌号码", value.VehicleNo);
-            hex = reader.ReadVirtualArray(10);
-            value.VehicleType = reader.ReadString(10);
+            hex = reader.ReadVirtualArray(12);
+            value.VehicleType = reader.ReadString(12);
             writer.WriteString($"[{hex.ToArray().ToHexString()}]机动车号牌分类", value.VehicleType);
         }
         /// <summary>
@@ -74,7 +74,7 @@ namespace JT808.Protocol.MessageBody.CarDVR
             writer.Skip(12 - (writer.GetCurrentPosition() - currentPosition), out var _);
             currentPosition = writer.GetCurrentPosition();
             writer.WriteString(value.VehicleType);
-            writer.Skip(10 - (writer.GetCurrentPosition() - currentPosition), out var _);
+            writer.Skip(12 - (writer.GetCurrentPosition() - currentPosition), out var _);
         }
         /// <summary>
         ///