diff --git a/protos/device_info.proto b/protos/device_info.proto
index 4cc01eb..8fc637b 100644
--- a/protos/device_info.proto
+++ b/protos/device_info.proto
@@ -12,20 +12,17 @@ message Section {
   // 区段编码
   string code = 2;
 
-  // 区段类型
-  graphicData.Section.SectionType type = 3;
-
   // 关联区段
-  repeated Section children = 4;
+  repeated string childrenId = 3;
 
   // 公里标
-  repeated graphicData.KilometerSystem kilometerSystem = 5;
+  repeated graphicData.KilometerSystem kilometerSystem = 4;
 
   // 转换后的公里标数字
-  repeated int64 convertKilometer = 7;
+  repeated int64 convertKilometer = 5;
   
   // 父级区段
-  Section section = 8;
+  Section section = 6;
 }
 
 // 道岔