diff --git a/SolarPower/Controllers/PowerStationController.cs b/SolarPower/Controllers/PowerStationController.cs
index 6a75b6b..d504cb0 100644
--- a/SolarPower/Controllers/PowerStationController.cs
+++ b/SolarPower/Controllers/PowerStationController.cs
@@ -829,6 +829,18 @@ namespace SolarPower.Controllers
             {
                 if (Device.Id == 0)
                 {
+                    PowerStation powerStation = null;
+                    powerStation = await powerStationRepository.GetOneAsync(Device.PowerStationId);
+                    string Number = await powerStationRepository.GetFinalSerialNumber(Device.PowerStationId, Device.Type);
+                    var tempSerialNumber = 0;
+                    if (!string.IsNullOrEmpty(Number))
+                    {
+                        tempSerialNumber = Convert.ToInt32(Number) + 1;
+                    }
+                    else
+                    {
+                        tempSerialNumber = 1;
+                    }
                     Device DeviceInfo = new Device()
                     {
                         Brand = Device.Brand,
@@ -841,9 +853,10 @@ namespace SolarPower.Controllers
                         Remark = Device.Remark,
                         TableName = Device.TableName,
                         Type = Device.Type,
-                        UID = Device.PowerStationId + "-" + Device.Type,
+                        UID = powerStation.Code + "-" + Device.Type + "-" + tempSerialNumber.ToString().PadLeft(3,'0'),
                         CreatedBy = myUser.Id,
-                        TypeName = Device.TypeName
+                        TypeName = Device.TypeName,
+                        SerialNumber = tempSerialNumber.ToString().PadLeft(3, '0')
                     };
                     List<string> properties = new List<string>()
                     {
@@ -859,7 +872,8 @@ namespace SolarPower.Controllers
                         "Type",
                         "UID",
                         "CreatedBy",
-                        "TypeName"
+                        "TypeName",
+                        "SerialNumber"
                     };
                     await powerStationRepository.AddDevice(DeviceInfo,properties);
 
@@ -878,9 +892,6 @@ namespace SolarPower.Controllers
                         Name = Device.Name,
                         ProductModel = Device.ProductModel,
                         Remark = Device.Remark,
-                        TableName = Device.TableName,
-                        Type = Device.Type,
-                        UID = Device.PowerStationId + "-" + Device.Type,
                         CreatedBy = myUser.Id,
                         TypeName = Device.TypeName
                     };
@@ -894,9 +905,6 @@ namespace SolarPower.Controllers
                         "Name",
                         "ProductModel",
                         "Remark",
-                        "TableName",
-                        "Type",
-                        "UID",
                         "CreatedBy",
                         "TypeName"
                     };
diff --git a/SolarPower/DBSchema/solar_power_schema.sql b/SolarPower/DBSchema/solar_power_schema.sql
index e596ec7..8c950e2 100644
--- a/SolarPower/DBSchema/solar_power_schema.sql
+++ b/SolarPower/DBSchema/solar_power_schema.sql
@@ -819,6 +819,7 @@ INSERT INTO `variable` (`id`, `name`, `value`, `remark`) VALUES
 /******************************
 ** 後續SQL修改從以下開始新增 **
 *******************************/
+ALTER TABLE `device` ADD COLUMN `SerialNumber` VARCHAR(3) NULL DEFAULT NULL COMMENT '單一設備流水號' COLLATE 'utf8mb4_unicode_ci' AFTER `PowerStationId`;/* 設備流水號 - 2021/6/18 12:21:00 */
 
 
 
diff --git a/SolarPower/Helper/DatabaseHelper.cs b/SolarPower/Helper/DatabaseHelper.cs
index b359893..2e57aa3 100644
--- a/SolarPower/Helper/DatabaseHelper.cs
+++ b/SolarPower/Helper/DatabaseHelper.cs
@@ -37,7 +37,7 @@ namespace SolarPower.Helper
             var passwordStr = ed.DESDecrypt(dbConfig.Password);
 
             //var connStr = $"server={serverStr};database={databaseStr};user={rootStr};password={passwordStr};charset=utf8;";
-            var connStr = @"server=127.0.0.1;database=solar_power;user=root;password=000000;charset=utf8;";
+            var connStr = @"server=127.0.0.1;port=3308;database=solar_power;user=root;password=00000000;charset=utf8;";
 
             this._connectionString = connStr;
         }
diff --git a/SolarPower/Models/PowerStation.cs b/SolarPower/Models/PowerStation.cs
index e18f2e7..96b733a 100644
--- a/SolarPower/Models/PowerStation.cs
+++ b/SolarPower/Models/PowerStation.cs
@@ -330,6 +330,7 @@ namespace SolarPower.Models.PowerStation
     {
         public string UID { get; set; }//設備編號
         public int CreatedBy { get; set; }//建立者
+        public string SerialNumber { get; set; }
     }
     /// <summary>
     ///設備dataTable 
diff --git a/SolarPower/Repository/Implement/PowerStationRepository.cs b/SolarPower/Repository/Implement/PowerStationRepository.cs
index f7ddb09..1f9c4b4 100644
--- a/SolarPower/Repository/Implement/PowerStationRepository.cs
+++ b/SolarPower/Repository/Implement/PowerStationRepository.cs
@@ -786,5 +786,28 @@ namespace SolarPower.Repository.Implement
                 conn.Close();
             }
         }
+        public async Task<string> GetFinalSerialNumber(int PowerStationId, string Type)
+        {
+            string Num;
+            using IDbConnection conn = _databaseHelper.GetConnection();
+            conn.Open();
+            var trans = conn.BeginTransaction();
+            try
+            {
+                var sql = "SELECT SerialNumber FROM device WHERE PowerStationId = @PowerStationId AND Type = @Type ORDER BY SerialNumber DESC";
+                Num = await conn.QueryFirstOrDefaultAsync<string>(sql, new { PowerStationId = PowerStationId, Type = Type });
+                trans.Commit();
+            }
+            catch (Exception exception)
+            {
+                trans.Rollback();
+                throw exception;
+            }
+            finally
+            {
+                conn.Close();
+            }
+            return Num;
+        }
     }
 }
diff --git a/SolarPower/Repository/Interface/IPowerStationRepository.cs b/SolarPower/Repository/Interface/IPowerStationRepository.cs
index 19548d4..bd3e555 100644
--- a/SolarPower/Repository/Interface/IPowerStationRepository.cs
+++ b/SolarPower/Repository/Interface/IPowerStationRepository.cs
@@ -181,5 +181,12 @@ namespace SolarPower.Repository.Interface
         /// <param name="properties"></param>
         /// <returns></returns>
         Task UpdateException(ExceptionModal Exception, List<string> properties);
+        /// <summary>
+        /// 取最後一個設備流水號
+        /// </summary>
+        /// <param name="PowerStationId"></param>
+        /// <param name="Type"></param>
+        /// <returns></returns>
+        Task<string> GetFinalSerialNumber(int PowerStationId, string Type);
     }
 }
diff --git a/SolarPower/Views/PowerStation/PowerStationEdit.cshtml b/SolarPower/Views/PowerStation/PowerStationEdit.cshtml
index 52d63f9..4d0c57b 100644
--- a/SolarPower/Views/PowerStation/PowerStationEdit.cshtml
+++ b/SolarPower/Views/PowerStation/PowerStationEdit.cshtml
@@ -1471,7 +1471,7 @@
                     toast_error(rel.msg);
                     return;
                 }
-
+                document.getElementById('Device_Type_modal').disabled = true;
                 $("#Device_Name_modal").val(rel.data.name);
                 $("#Device_Type_modal").val(rel.data.type);
                 $("#Device_Brand_modal").val(rel.data.brand);
diff --git a/SolarPower/Views/PowerStation/_DeviceSetting.cshtml b/SolarPower/Views/PowerStation/_DeviceSetting.cshtml
index 5922416..8f58788 100644
--- a/SolarPower/Views/PowerStation/_DeviceSetting.cshtml
+++ b/SolarPower/Views/PowerStation/_DeviceSetting.cshtml
@@ -79,7 +79,7 @@
                         </div>
                         <div class="form-group col-lg-6">
                             <div style="margin-bottom: 0.3rem">
-                                <label class="form-label" for="Device_Remark_modal"><span class="text-danger">*</span>備註</label>
+                                <label class="form-label" for="Device_Remark_modal">備註</label>
                                 <input type="text" id="Device_Remark_modal" name="Device_Remark_modal" class="form-control">
                             </div>
                         </div>