diff --git a/server/gameserver/metadata.cc b/server/gameserver/metadata.cc
index dfbb4d4..c2a69c0 100644
--- a/server/gameserver/metadata.cc
+++ b/server/gameserver/metadata.cc
@@ -80,6 +80,17 @@ namespace MetaData
                 abort();
             }
         }
+        first_safearea_center = a8::Vec2(i->map_width() / 2.0f,
+                                         i->map_height() / 2.0f);
+        if (!i->first_safearea_center().empty()) {
+            std::vector<std::string> strings;
+            a8::Split(i->first_safearea_center(), strings, ':');
+            if (strings.size() != 2) {
+                abort();
+            }
+            first_safearea_center = a8::Vec2(a8::XValue(strings[0]).GetDouble(),
+                                             a8::XValue(strings[1]).GetDouble());
+        }
         if (i->player() < 10) {
             abort();
         }
diff --git a/server/gameserver/metadata.h b/server/gameserver/metadata.h
index 85bb08f..c6d9790 100755
--- a/server/gameserver/metadata.h
+++ b/server/gameserver/metadata.h
@@ -28,6 +28,7 @@ namespace MetaData
         int refresh_robot_min_time = 0;
         int refresh_robot_max_time = 0;
         std::vector<int> buff_list;
+        a8::Vec2 first_safearea_center;
 
         void Init();
         std::string RandTemplate();
diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index ceb0197..01210fc 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -1226,27 +1226,11 @@ void Room::UpdateGasMoving()
         }
         if (std::abs(gas_data_.gas_progress - gas_data_.rad_new) <= 0.001f) {
             int pre_area_id = gas_data_.new_area_meta->i->id();
-            a8::Vec2 pre_pos = gas_data_.pos_new;
             if (!MetaMgr::Instance()->GetSafeArea(pre_area_id + 1)) {
                 gas_data_.is_last_gas = true;
                 return;
             }
-            gas_data_.gas_mode = GasWaiting;
-            gas_data_.old_area_meta = MetaMgr::Instance()->GetSafeArea(pre_area_id);
-            gas_data_.new_area_meta = MetaMgr::Instance()->GetSafeArea(pre_area_id + 1);
-            gas_data_.gas_progress = gas_data_.old_area_meta->i->rad();
-            gas_data_.gas_start_frameno = GetFrameNo();
-            gas_data_.pos_old = pre_pos;
-            gas_data_.pos_old_bk = gas_data_.pos_old;
-            {
-                bool gen_ok = GenSmallCircle(gas_data_.pos_old,
-                                             gas_data_.old_area_meta->i->rad(),
-                                             gas_data_.new_area_meta->i->rad(),
-                                             gas_data_.pos_new);
-                assert(gen_ok);
-            }
-            gas_data_.rad_old = gas_data_.old_area_meta->i->rad();
-            gas_data_.rad_new = gas_data_.new_area_meta->i->rad();
+            ForwardGasRing(1);
             if (!MetaMgr::Instance()->GetSafeArea(gas_data_.new_area_meta->i->id() + 2)) {
 #if 1
                 //最后一圈
@@ -1291,8 +1275,7 @@ void Room::UpdateGasJump()
         gas_data_.new_area_meta = MetaMgr::Instance()->GetSafeArea(map_meta_->i->safearea() + 1);
         gas_data_.gas_progress = gas_data_.old_area_meta->i->rad();
         gas_data_.gas_start_frameno = GetFrameNo();
-        gas_data_.pos_old = a8::Vec2(map_meta_->i->map_width() / 2.0f,
-                                    map_meta_->i->map_height() / 2.0f);
+        gas_data_.pos_old = map_meta_->first_safearea_center;
         gas_data_.pos_old_bk = gas_data_.pos_old;
         {
             bool gen_ok = GenSmallCircle(gas_data_.pos_old,
@@ -1303,6 +1286,9 @@ void Room::UpdateGasJump()
         }
         gas_data_.rad_old = gas_data_.old_area_meta->i->rad();
         gas_data_.rad_new = gas_data_.new_area_meta->i->rad();
+        if (map_meta_->i->init_gas_ring() > 0) {
+            ForwardGasRing(map_meta_->i->init_gas_ring());
+        }
         battle_start_frameno_ = GetFrameNo();
         xtimer.DeleteTimer(auto_jump_timer_);
         auto_jump_timer_ = nullptr;
@@ -3649,3 +3635,33 @@ void Room::InitAndroidAI()
     }
 #endif
 }
+
+void Room::ForwardGasRing(int n)
+{
+    while (n > 0) {
+        int pre_area_id = gas_data_.new_area_meta->i->id();
+        if (!MetaMgr::Instance()->GetSafeArea(pre_area_id + 1)) {
+            gas_data_.is_last_gas = true;
+            return;
+        }
+        a8::Vec2 pre_pos = gas_data_.pos_new;
+        gas_data_.old_area_meta = MetaMgr::Instance()->GetSafeArea(pre_area_id);
+        gas_data_.new_area_meta = MetaMgr::Instance()->GetSafeArea(pre_area_id + 1);
+        gas_data_.gas_progress = gas_data_.old_area_meta->i->rad();
+        gas_data_.gas_start_frameno = GetFrameNo();
+        gas_data_.pos_old = pre_pos;
+        gas_data_.pos_old_bk = gas_data_.pos_old;
+        {
+            bool gen_ok = GenSmallCircle(gas_data_.pos_old,
+                                     gas_data_.old_area_meta->i->rad(),
+                                     gas_data_.new_area_meta->i->rad(),
+                                     gas_data_.pos_new);
+            if (!gen_ok) {
+                abort();
+            }
+        }
+        gas_data_.rad_old = gas_data_.old_area_meta->i->rad();
+        gas_data_.rad_new = gas_data_.new_area_meta->i->rad();
+        --n;
+    }
+}
diff --git a/server/gameserver/room.h b/server/gameserver/room.h
index 0697126..3ef2d51 100644
--- a/server/gameserver/room.h
+++ b/server/gameserver/room.h
@@ -248,6 +248,7 @@ private:
     void ShuaLastGas();
     size_t GetRoomMaxPlayerNum();
     void InitAndroidAI();
+    void ForwardGasRing(int n);
 
     #ifdef DEBUG
     void InitDebugInfo();
diff --git a/server/tools/protobuild/metatable.proto b/server/tools/protobuild/metatable.proto
index c25ec34..4e9a469 100755
--- a/server/tools/protobuild/metatable.proto
+++ b/server/tools/protobuild/metatable.proto
@@ -34,6 +34,8 @@ message Map
     optional int32 safearea = 11;
     optional string game_start_buff_list = 12;
     optional string map_pic  = 13;
+    optional string first_safearea_center = 14;
+    optional int32 init_gas_ring = 15;
 }
 
 message MapThing