diff --git a/Backend/Controllers/SystemCategoryController.cs b/Backend/Controllers/SystemCategoryController.cs
index 0030edd..1c3bac6 100644
--- a/Backend/Controllers/SystemCategoryController.cs
+++ b/Backend/Controllers/SystemCategoryController.cs
@@ -557,21 +557,33 @@ namespace Backend.Controllers
                 }
                 else
                 {
-                    Dictionary<string, object> Device_itemDic = new Dictionary<string, object>()
-                    {
-                        { "@full_name", device_Item.full_name},
-                        { "@points", device_Item.points},
-                        { "@unit", device_Item.unit},
-                        { "@is_show", device_Item.is_show},
-                        { "@is_show_riserDiagram", device_Item.is_show_riserDiagram},
-                        { "@is_controll", device_Item.is_controll},
-                        { "@is_bool", device_Item.is_bool},
-                        { "@is_show_history", device_Item.is_show_history},
-                        { "@updated_by", myUserInfo.Userinfo_guid},
-                        { "@updated_at", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")},
-                    };
+                    var sql = $@"SELECT di.id FROM device_item di 
+                                                    WHERE di.deleted = 0 AND device_system_tag = @device_system_tag and device_name_tag = @device_name_tag and points = @points";
 
-                    await backendRepository.UpdateOneByCustomTable(Device_itemDic, "device_item", "id='" + device_Item.id + "'");
+                    var deviceItemId = await backendRepository.GetAllAsync<int>(sql,
+                                            new { points = device_Item.points, device_system_tag = main_tag, device_name_tag = sub_tag });
+
+                    if (deviceItemId.Count() > 0)
+                    {
+                        foreach (var id in deviceItemId)
+                        {
+                            Dictionary<string, object> Device_itemDic = new Dictionary<string, object>()
+                            {
+                                { "@full_name", device_Item.full_name},
+                                { "@points", device_Item.points},
+                                { "@unit", device_Item.unit},
+                                { "@is_show", device_Item.is_show},
+                                { "@is_show_riserDiagram", device_Item.is_show_riserDiagram},
+                                { "@is_controll", device_Item.is_controll},
+                                { "@is_bool", device_Item.is_bool},
+                                { "@is_show_history", device_Item.is_show_history},
+                                { "@updated_by", myUserInfo.Userinfo_guid},
+                                { "@updated_at", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")},
+                            };
+
+                            await backendRepository.UpdateOneByCustomTable(Device_itemDic, "device_item", "id='" + id + "'");
+                        }
+                    }
 
                     apiResult.Code = "0000";
                     apiResult.Msg = "修改成功";
@@ -652,7 +664,7 @@ namespace Backend.Controllers
             {
                 string sWhere = @$"deleted = @Deleted AND id = @id";
 
-                object param = new { Deleted = 0, id = id};
+                object param = new { Deleted = 0, id = id };
 
                 var device_Item = await backendRepository.GetOneAsync<Device_item>("device_item", sWhere, param);
 
@@ -663,7 +675,9 @@ namespace Backend.Controllers
                     return apiResult;
                 }
 
-                await backendRepository.DeleteOne(id.ToString(), "device_item", "id");
+                string sql = $@"update device_item set deleted = 1 where device_system_tag = '{device_Item.device_system_tag}' and device_name_tag = '{device_Item.device_name_tag}' and deleted = 0
+                                and points = '{device_Item.points}'";
+                await backendRepository.ExecuteSql(sql);
 
                 apiResult.Code = "0000";
                 apiResult.Msg = "刪除成功";