diff --git a/server/tools/protobuild/cs_proto.proto b/server/tools/protobuild/cs_proto.proto
index 467a3821..d2bd2ff5 100755
--- a/server/tools/protobuild/cs_proto.proto
+++ b/server/tools/protobuild/cs_proto.proto
@@ -566,13 +566,14 @@ message MFBullet
     optional MFVec2 dir = 4; //方向
     optional int32 gun_lv = 5; //枪等级
     optional int32 bulletskin = 6; //子弹皮肤 未用到
-    optional bool crit = 7;
-    optional int32 reflect_count = 8;
-    optional int32 reflect_objid = 9;
     optional int32 gun_id = 10; //枪id
     optional float fly_distance = 11; //只有手雷和烟雾弹时这个字段才有意义
     optional int32 bullet_uniid = 12; //子弹唯一id
-    optional int32 trace_target_uniid = 13; //不为空和0的时候表示要追踪的目标对象uniid
+
+    //追踪型子弹一下字段才有意义(trace_target_uniid != 0)
+    optional int32 trace_target_uniid = 13 [default = 0]; //不为空和0的时候表示要追踪的目标对象uniid
+    optional float track_change_time = 14 [default = 0]; //变轨时间间隔（毫秒）
+    optional int32 is_through = 15 [default = 0]; //是否穿墙
 }
 
 //射击