diff --git a/Backend/Controllers/DeviceManageController.cs b/Backend/Controllers/DeviceManageController.cs
index b96ea21..3692b43 100644
--- a/Backend/Controllers/DeviceManageController.cs
+++ b/Backend/Controllers/DeviceManageController.cs
@@ -81,7 +81,7 @@ namespace Backend.Controllers
 	                                f.priority AS fPriority
                                 FROM sub_system_floor ssf
                                 JOIN floor f ON ssf.floor_tag = f.full_name AND ssf.building_tag = f.building_tag AND f.deleted = 0
-                                WHERE ssf.deleted = 0
+                                WHERE ssf.deleted = 0 and ssf.is_link = 1
                                 ORDER BY f.priority, f.created_at
 ";
                 var subSystemFloorRawDatas = await backendRepository.GetAllAsync<SubSystemFloorRawData>(sub_sql);