diff --git a/protos/device_info.proto b/protos/device_info.proto
index e2ec4d8..539afcc 100644
--- a/protos/device_info.proto
+++ b/protos/device_info.proto
@@ -7,16 +7,16 @@ option java_outer_classname = "DeviceInfoProto";
 
 // 区段
 message Section {
-  string id = 1;
+  uint32 id = 1;
 
   // 区段编码
   string code = 2;
 
   // 关联区段
-  repeated string childrenId = 3;
+  repeated uint32 childrenId = 3;
 
   // 物理区段Id
-  string physicalSectionId = 4;
+  uint32 physicalSectionId = 4;
 
   // 目的地码
   string destinationCode = 5;
@@ -28,7 +28,7 @@ message Section {
 // 道岔
 message Turnout {
 
-  string id = 1;
+  uint32 id = 1;
 
   string code = 2;