diff --git a/projects/IoT.Shared/Application/Models/SPCommandModel.cs b/projects/IoT.Shared/Application/Models/SPCommandModel.cs
index 096cdf1a..83dd5fd8 100644
--- a/projects/IoT.Shared/Application/Models/SPCommandModel.cs
+++ b/projects/IoT.Shared/Application/Models/SPCommandModel.cs
@@ -22,5 +22,6 @@
         /// hex
         /// </summary>
         public string Message { get; set; }
+        public int Order { get; set; }
     }
 }
\ No newline at end of file
diff --git a/projects/IoTNode/DeviceServices/SerialPort/SerialPortService.cs b/projects/IoTNode/DeviceServices/SerialPort/SerialPortService.cs
index 5484ad96..e131248a 100644
--- a/projects/IoTNode/DeviceServices/SerialPort/SerialPortService.cs
+++ b/projects/IoTNode/DeviceServices/SerialPort/SerialPortService.cs
@@ -15,6 +15,7 @@ namespace IoTNode.DeviceServices.SerialPortManager
     public class SerialPortService : BaseDeviceService
     {
         private const string _productNumber = "serialport";
+        private static object lockObject = new object();
 
         public SerialPortService(IServiceProvider applicationServices, IConfiguration configuration)
             : base(applicationServices, configuration)
@@ -26,11 +27,10 @@ namespace IoTNode.DeviceServices.SerialPortManager
             this.Notify();
         }
 
-        public void Exec(string id, string name)
+        public void Exec(string deviceNumber, string name)
         {
             using var scope = _applicationServices.CreateScope();
             var repo = scope.ServiceProvider.GetService<IRepository<Device>>();
-            var deviceNumber = $"serialportonHelper.Instance.GetCPUNumber()";
             var device = repo.ReadOnlyTable().Include(o => o.Data).FirstOrDefault(o => o.Number == deviceNumber);
             var buttons = device.Data.FirstOrDefault(o => o.Key == "Buttons")?.Value.FromJson<List<SPCommandModel>>(); ;
             var button = buttons.FirstOrDefault(o => o.Name == name);
@@ -61,13 +61,17 @@ namespace IoTNode.DeviceServices.SerialPortManager
         [System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1031:Do not catch general exception types", Justification = "<挂起>")]
         public static void ExecInternal(string port, int baud, int dataBits, int partity, int stopBits, string message)
         {
+
             try
             {
-                using var sp = new SerialPort(port, baud, (Parity)partity, dataBits, (StopBits)stopBits);
-                sp.Open();
-                var bytes = message.HexToBytes();
-                sp.Write(bytes, 0, bytes.Length);
-                sp.Close();
+                lock (lockObject)
+                {
+                    using var sp = new SerialPort(port, baud, (Parity)partity, dataBits, (StopBits)stopBits);
+                    sp.Open();
+                    var bytes = message.HexToBytes();
+                    sp.Write(bytes, 0, bytes.Length);
+                    sp.Close();
+                }
             }
             catch (Exception ex)
             {
@@ -102,7 +106,7 @@ namespace IoTNode.DeviceServices.SerialPortManager
                 };
                 repo.Add(device);
                 this.UpdateDevice(repo, device);
-                var buttons = new List<SPCommandModel>() { new SPCommandModel { Name = "测试", PortName = "/dev/ttyS0", BaudRate = 9600, Parity = 0, DataBits = 8, StopBits = 1, Message = "" } }.ToJson();
+                var buttons = new List<SPCommandModel>() { new SPCommandModel { Name = "测试",PortName = "COM1", BaudRate = 9600, Parity = 0, DataBits = 8, StopBits = 1, Message = "0123456789ABCDEF" } }.ToJson();
                 this.UpdateData(repo, device, device.CreateData("Buttons", buttons, DeviceDataType.String, "指令", timestamp: DateTimeOffset.Now.ToUnixTimeMilliseconds()));
             }
         }