diff --git a/src/JT809.Protocol.Test/JT809MessageBody/Jt809_0x9103Test.cs b/src/JT809.Protocol.Test/JT809MessageBody/Jt809_0x9103Test.cs
new file mode 100644
index 0000000..0916c8d
--- /dev/null
+++ b/src/JT809.Protocol.Test/JT809MessageBody/Jt809_0x9103Test.cs
@@ -0,0 +1,63 @@
+using JT808.Protocol.Extensions;
+using JT809.Protocol.MessageBody;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Xunit;
+
+namespace JT809.Protocol.Test.JT809MessageBody
+{
+    public class Jt809_0x9103Test
+    {
+        private JT809Serializer JT809Serializer = new JT809Serializer();
+        [Fact]
+        public void Test1()
+        {
+            var jT809_0X9103 = new JT809_0x9103
+            {
+                SubBusinessType = 10086,
+                ManageMsgSNInform = new List<Metadata.JT809ManageMsgSNInform>
+                {
+                    new Metadata.JT809ManageMsgSNInform
+                    {
+                        SubBusinessType=10010,
+                        MsgSN=10010,
+                        Time=DateTime.Parse("2011-11-11 11:11:11")
+                    },
+                    new Metadata.JT809ManageMsgSNInform
+                    {
+                        SubBusinessType=10086,
+                        MsgSN=10086,
+                        Time=DateTime.Parse("2011-11-11 11:11:11")
+                    },
+                    new Metadata.JT809ManageMsgSNInform
+                    {
+                        SubBusinessType=10000,
+                        MsgSN=10000,
+                        Time=DateTime.Parse("2011-11-11 11:11:11")
+                    }
+                }
+            };
+            var hex = JT809Serializer.Serialize(jT809_0X9103).ToHexString();
+            Assert.Equal("27660000002B03271A0000271A000000004EBC924F276600002766000000004EBC924F271000002710000000004EBC924F", hex);
+        }
+
+        [Fact]
+        public void Test2()
+        {
+            var bytes = "27660000002B03271A0000271A000000004EBC924F276600002766000000004EBC924F271000002710000000004EBC924F".ToHexBytes();
+            var jT809_0X9102 = JT809Serializer.Deserialize<JT809_0x9103>(bytes);
+            Assert.Equal(10086u, jT809_0X9102.SubBusinessType);
+            Assert.Equal(3, jT809_0X9102.Count);
+            Assert.Equal(10010u, jT809_0X9102.ManageMsgSNInform[0].SubBusinessType);
+            Assert.Equal(10010u, jT809_0X9102.ManageMsgSNInform[0].MsgSN);
+            Assert.Equal(DateTime.Parse("2011-11-11 11:11:11"), jT809_0X9102.ManageMsgSNInform[0].Time);
+            Assert.Equal(10086u, jT809_0X9102.ManageMsgSNInform[1].SubBusinessType);
+            Assert.Equal(10086u, jT809_0X9102.ManageMsgSNInform[1].MsgSN);
+            Assert.Equal(DateTime.Parse("2011-11-11 11:11:11"), jT809_0X9102.ManageMsgSNInform[1].Time);
+            Assert.Equal(10000u, jT809_0X9102.ManageMsgSNInform[2].SubBusinessType);
+            Assert.Equal(10000u, jT809_0X9102.ManageMsgSNInform[2].MsgSN);
+            Assert.Equal(DateTime.Parse("2011-11-11 11:11:11"), jT809_0X9102.ManageMsgSNInform[2].Time);
+        }
+    }
+}