diff --git a/protos/stationLayoutGraphics.proto b/protos/stationLayoutGraphics.proto
index f7e9086..59450b5 100644
--- a/protos/stationLayoutGraphics.proto
+++ b/protos/stationLayoutGraphics.proto
@@ -205,8 +205,8 @@ message Section {
   RelatedRef pbRef = 5; // 区段B端关联的物理区段或道岔(非岔区)
   SectionType sectionType = 6;       // 区段类型
   repeated string axleCountings = 7; // 关联的计轴(岔区&&非岔区)
-  repeated string children = 8;      // 下属逻辑区段id(非岔区)
-  string destinationCode = 9;        // 目的地码
+  repeated string children = 8; // 下属逻辑区段id(非岔区)/下属道岔id(岔区)
+  string destinationCode = 9; // 目的地码
 }
 
 /** 逻辑区段 */