diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index a562977..00f58b1 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -2137,7 +2137,7 @@ void Room::ProcDieAndroid(int die_time, int die_num)
             {
             Android* hum = (Android*)pair.second;
             alive_humans.push_back(hum);
-            if (alive_humans.size() > 10) {
+            if (alive_humans.size() > 20) {
                 break;
             }
         }
@@ -2150,12 +2150,24 @@ void Room::ProcDieAndroid(int die_time, int die_num)
                 break;
             }
         }
-        std::sort(alive_humans.begin(), alive_humans.end(),
-                  [first_alive_player] (Human* a, Human* b )
-                  {
-                      return first_alive_player->GetPos().ManhattanDistance(a->GetPos()) >
-                          first_alive_player->GetPos().ManhattanDistance(b->GetPos());
-                  });
+        if (first_alive_player) {
+            std::sort(alive_humans.begin(), alive_humans.end(),
+                      [first_alive_player] (Human* a, Human* b )
+                      {
+                          return first_alive_player->GetPos().ManhattanDistance(a->GetPos()) >
+                              first_alive_player->GetPos().ManhattanDistance(b->GetPos());
+                      });
+        }
+    }
+    {
+        if (alive_humans.size() == 1) {
+            Human* hum = alive_humans[0];
+            hum->BeKill(VP_SafeArea,
+                        "毒圈",
+                        VW_SafeArea);
+            a8::UnSetBitFlag(hum->status, HS_Disable);
+            return;
+        }
     }
     int dead_num = 0;
     int try_count = 0;