diff --git a/Backend/Controllers/BuildInfoController.cs b/Backend/Controllers/BuildInfoController.cs
index f06e9bb..5b57556 100644
--- a/Backend/Controllers/BuildInfoController.cs
+++ b/Backend/Controllers/BuildInfoController.cs
@@ -495,7 +495,7 @@ namespace Backend.Controllers
 
             try
             {
-                var check = await backendRepository.GetOneAsync<string>($@"select floor_guid from variable where floor_guid != {post.Floor_guid} and building_tag = '{post.Building_tag}' and 
+                var check = await backendRepository.GetOneAsync<string>($@"select floor_guid from floor where floor_guid != '{post.Floor_guid ?? ""}' and building_tag = '{post.Building_tag}' and 
                                                                             full_name = '{post.Full_name}' and deleted = 0;");
                 if (!string.IsNullOrEmpty(check))
                 {
diff --git a/Backend/Controllers/SystemCategoryController.cs b/Backend/Controllers/SystemCategoryController.cs
index a45c5e1..0030edd 100644
--- a/Backend/Controllers/SystemCategoryController.cs
+++ b/Backend/Controllers/SystemCategoryController.cs
@@ -317,7 +317,7 @@ namespace Backend.Controllers
 
             try
             {
-                var check = await backendRepository.GetOneAsync<string>($"select id from variable where id != {post.id} and system_type = '{sub_system_type}' and system_value = '{post.system_value}' and deleted = 0;");
+                var check = await backendRepository.GetOneAsync<string>($"select id from variable where id != {post.id} and system_type = '{sub_system_type}' and system_value = '{post.system_value}' and system_parent_id = {post.system_parent_id} and deleted = 0;");
                 if (!string.IsNullOrEmpty(check))
                 {
                     apiResult.Code = "9998";
@@ -331,19 +331,8 @@ namespace Backend.Controllers
 
                 var systemSub = await backendRepository.GetOneAsync<VariableInfo>("variable", sWhere, param);
 
-                sWhere = @$"deleted = 0 AND system_type = @sub_system_type AND system_value = @system_value";
-                param = new { sub_system_type = sub_system_type, system_value = post.system_value };
-                var subV = await backendRepository.GetOneAsync<VariableInfo>("variable", sWhere, param);
-                
                 if (systemSub == null)
-                {
-                    if (subV != null)
-                    {
-                        apiResult.Code = "0001";
-                        apiResult.Msg = "不可新增相同的系統小類代號。";
-                        return apiResult;
-                    }
-
+                { 
                     //新增
                     //產生一組GUID
                     //獲取最新的大類
@@ -370,13 +359,6 @@ namespace Backend.Controllers
                 }
                 else
                 {
-                    if (subV != null)
-                    {
-                        apiResult.Code = "0001";
-                        apiResult.Msg = "不可修改成相同的系統小類代號。";
-                        return apiResult;
-                    }
-
                     Dictionary<string, object> systemSubDic = new Dictionary<string, object>()
                     {
                         
@@ -546,23 +528,29 @@ namespace Backend.Controllers
 
                 if (device_Item.id == 0)
                 {
-                    
-                    //新增
-                    Dictionary<string, object> Device_itemDic = new Dictionary<string, object>()
+                    var building = await backendRepository.GetAllAsync<string>("select building_tag from building where deleted = 0");
+                    foreach (var b in building)
                     {
-                        { "@device_system_tag", main_tag},
-                        { "@device_name_tag", sub_tag},
-                        { "@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},
-                        { "@created_by", myUserInfo.Userinfo_guid},
-                    };
-                    await backendRepository.AddOneByCustomTable(Device_itemDic, "device_item");
+                        //新增
+                        Dictionary<string, object> Device_itemDic = new Dictionary<string, object>()
+                        {
+                            { "@device_system_tag", main_tag},
+                            { "@device_name_tag", sub_tag},
+                            { "@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},
+                            { "@created_by", myUserInfo.Userinfo_guid},
+                            { "@device_building_tag", b},
+                            { "@is_link", "1"},
+                        };
+                        await backendRepository.AddOneByCustomTable(Device_itemDic, "device_item");
+
+                    }
 
                     apiResult.Code = "0000";
                     apiResult.Msg = "新增成功";