diff --git a/protos/ibpGraphics.proto b/protos/ibpGraphics.proto
index 3685b1d..5132b53 100644
--- a/protos/ibpGraphics.proto
+++ b/protos/ibpGraphics.proto
@@ -10,6 +10,7 @@ message IBPGraphicStorage {
   repeated IbpKey ibpKeys = 4;
   repeated IbpArrow ibpArrows = 5;
   repeated IBPText IBPTexts = 6;
+  UniqueIdType UniqueIdPrefix = 7;
 }
 
 message IBPButton {
@@ -58,3 +59,9 @@ message IbpArrow {
   string code = 2;
   repeated Point points = 3;
 }
+
+message UniqueIdType {
+  string city = 1;           //城市
+  string lineId = 2;         //线路号
+  string belongsStation = 3; //所属车站
+}