diff --git a/server/gameserver/mtb/MobaRoom.h b/server/gameserver/mtb/MobaRoom.h
index 099167d7..2615e4c9 100644
--- a/server/gameserver/mtb/MobaRoom.h
+++ b/server/gameserver/mtb/MobaRoom.h
@@ -14,7 +14,7 @@ namespace mtb
     int revive_time() const { return revive_time_; };
     int game_time() const { return game_time_; };
     int tower_interval() const { return tower_interval_; };
-    int tower_recover_hp_rate() const { return tower_recover_hp_rate_; };
+    float tower_recover_hp_rate() const { return tower_recover_hp_rate_; };
     const std::string towers() const { return towers_; };
 
     bool has_map_id() const { return __flags__.test(0);};
@@ -30,7 +30,7 @@ namespace mtb
     int revive_time_ = 0;
     int game_time_ = 0;
     int tower_interval_ = 0;
-    int tower_recover_hp_rate_ = 0;
+    float tower_recover_hp_rate_ = 0.0f;
     std::string towers_;
 
 public:
diff --git a/server/gameserver/mtb/mtb.all.cc b/server/gameserver/mtb/mtb.all.cc
index 487b6c15..b3bc873e 100644
--- a/server/gameserver/mtb/mtb.all.cc
+++ b/server/gameserver/mtb/mtb.all.cc
@@ -120,7 +120,7 @@ namespace mtb
         meta_class->SetSimpleField(1, "revive_time", a8::reflect::ET_INT32, my_offsetof2(MobaRoom, revive_time_));
         meta_class->SetSimpleField(2, "game_time", a8::reflect::ET_INT32, my_offsetof2(MobaRoom, game_time_));
         meta_class->SetSimpleField(3, "tower_interval", a8::reflect::ET_INT32, my_offsetof2(MobaRoom, tower_interval_));
-        meta_class->SetSimpleField(4, "tower_recover_hp_rate", a8::reflect::ET_INT32, my_offsetof2(MobaRoom, tower_recover_hp_rate_));
+        meta_class->SetSimpleField(4, "tower_recover_hp_rate", a8::reflect::ET_FLOAT, my_offsetof2(MobaRoom, tower_recover_hp_rate_));
         meta_class->SetSimpleField(5, "towers", a8::reflect::ET_STRING, my_offsetof2(MobaRoom, towers_));
       }
       return meta_class;
diff --git a/server/tools/protobuild/mt.proto b/server/tools/protobuild/mt.proto
index 849b87bd..84e729d4 100755
--- a/server/tools/protobuild/mt.proto
+++ b/server/tools/protobuild/mt.proto
@@ -52,7 +52,7 @@ message MobaRoom
     optional int32 revive_time = 2;
     optional int32 game_time = 3;
     optional int32 tower_interval = 4;
-    optional int32 tower_recover_hp_rate = 5;
+    optional float tower_recover_hp_rate = 5;
     optional string towers = 6;
 }