diff --git a/protos/CommonProto.proto b/protos/CommonProto.proto
index 6f65b59..85f4ac5 100644
--- a/protos/CommonProto.proto
+++ b/protos/CommonProto.proto
@@ -442,7 +442,7 @@ option optimize_for = SPEED;
 
 	message ItemInfo{
         optional int32 templateId = 1;//模板ID
-        optional int32 overlap = 2;//堆叠数量
+        optional int64 overlap = 2;//堆叠数量
         optional int32 nextRefreshTime =3; //下次刷新时间
     }