diff --git a/src/iscs_graphic_data.proto b/src/iscs_graphic_data.proto
index 3ed1301..09644a0 100644
--- a/src/iscs_graphic_data.proto
+++ b/src/iscs_graphic_data.proto
@@ -123,9 +123,15 @@ message TemperatureDetector {
 }
 
 message CCTVOfEquipmentLayoutStorage {
+   enum LayerType {
+    StationHall = 0;  //站厅
+    platform = 1; //站台
+    PTZ = 2; //云台
+  }
   string stationName = 1;
   common.Canvas canvas = 2;
   CommonGraphicStorage commonGraphicStorage = 3;
+  LayerType layer = 4; // 分层
 }
 
 message FASOfPlatformAlarmStorage {