diff --git a/server/gameserver/metadata.cc b/server/gameserver/metadata.cc
index 9212067..ab83eac 100644
--- a/server/gameserver/metadata.cc
+++ b/server/gameserver/metadata.cc
@@ -112,10 +112,19 @@ namespace MetaData
 
     void MapThing::Init()
     {
-        std::vector<std::string> strings;
-        a8::Split(i->buff_list(), strings, '|');
-        for (const std::string& tmp_str : strings) {
-            buff_list.push_back(a8::XValue(tmp_str));
+        {
+            std::vector<std::string> strings;
+            a8::Split(i->buff_list(), strings, '|');
+            for (const std::string& tmp_str : strings) {
+                buff_list.push_back(a8::XValue(tmp_str));
+            }
+        }
+        {
+            std::vector<std::string> strings;
+            a8::Split(i->airdrop_mon(), strings, '|');
+            for (const std::string& tmp_str : strings) {
+                airdrop_mon_list.push_back(a8::XValue(tmp_str));
+            }
         }
     }
 
diff --git a/server/gameserver/metadata.h b/server/gameserver/metadata.h
index 9678fe2..947e80b 100755
--- a/server/gameserver/metadata.h
+++ b/server/gameserver/metadata.h
@@ -43,6 +43,7 @@ namespace MetaData
     {
         const metatable::MapThing* i = nullptr;
         std::vector<int> buff_list;
+        std::vector<int> airdrop_mon_list;
 
         void Init();
     };
diff --git a/server/tools/protobuild/metatable.proto b/server/tools/protobuild/metatable.proto
index ecc86dd..30f4391 100755
--- a/server/tools/protobuild/metatable.proto
+++ b/server/tools/protobuild/metatable.proto
@@ -60,6 +60,7 @@ message MapThing
     optional int32 explosion_interval = 18;
     optional int32 explosion_times = 19;
     optional int32 explosion_float = 20;
+    optional string airdrop_mon = 21;
 }
 
 message SafeArea