diff --git a/libraries/mogo-adas-data/src/main/proto/message_pad.proto b/libraries/mogo-adas-data/src/main/proto/message_pad.proto
index 8b55a9600a..b64521c2b8 100644
--- a/libraries/mogo-adas-data/src/main/proto/message_pad.proto
+++ b/libraries/mogo-adas-data/src/main/proto/message_pad.proto
@@ -493,9 +493,9 @@ message CmdInfo {
 
 enum StartPosType
 {
-    FIRST_STATION = 0; //首站点触发
-    MIDDLE = 1; //中间站点触发
-    OTHER = 2; // 非（首站点/中间站点）触发
+    FIRST_STATION = 0; //首站第一次启动自驾成功前
+    MIDDLE = 1; //中间站点第一次启动自驾成功前
+    OTHER = 2; // 站点启动自驾成功后不管什么原因掉自驾重新启动的标识
 }
 
 message SetAutopilotModeReq