diff --git a/protos/tccGraphics.proto b/protos/tccGraphics.proto
index f08fad4..32c22f8 100644
--- a/protos/tccGraphics.proto
+++ b/protos/tccGraphics.proto
@@ -34,6 +34,7 @@ message TccKey {
   enum TccKeyType {
     driverControllerActivationClint = 0; //司控器激活端
     frontAndRearDirectionalControl = 1;//前后方向控制
+    trainDoorMode = 2;//列车门模式
   }
   graphicData.CommonInfo common = 1;
   string code = 2;