diff --git a/source/component/map.py b/source/component/map.py
index bc4745d..1f65f97 100755
--- a/source/component/map.py
+++ b/source/component/map.py
@@ -144,7 +144,7 @@ class Map():
         self.map[map_y][map_x][c.MAP_SLEEP] = sleep
     
     def removeMapPlant(self, map_x, map_y, plantName):
-        self.map[map_y][map_x][c.MAP_PLANT].remove(plantName)
+        self.map[map_y][map_x][c.MAP_PLANT].discard(plantName)
 
     def getRandomMapIndex(self):
         map_x = random.randint(0, self.width-1)
diff --git a/source/component/plant.py b/source/component/plant.py
index 10c586e..422e122 100755
--- a/source/component/plant.py
+++ b/source/component/plant.py
@@ -705,7 +705,9 @@ class PotatoMine(Plant):
                 self.is_init = False
 
     def canAttack(self, zombie):
-        if (pg.sprite.collide_circle_ratio(0.55)(zombie, self) and
+        if (self.name == c.POLE_VAULTING_ZOMBIE and (not self.jumped)):
+            return False
+        elif (pg.sprite.collide_circle_ratio(0.55)(zombie, self) and
             (not self.is_init) and (not zombie.lostHead)):
             return True
         return False
diff --git a/source/state/level.py b/source/state/level.py
index 2675802..df1d3dc 100644
--- a/source/state/level.py
+++ b/source/state/level.py
@@ -408,18 +408,18 @@ class Level(tool.State):
             self.numZombie = 0
             # 新的僵尸生成机制：级别——权重生成
             self.createZombieInfo = {# 生成僵尸:(级别, 权重)
-                        c.NORMAL_ZOMBIE:(1, 4000),
-                        c.FLAG_ZOMBIE:(1, 0),
-                        c.CONEHEAD_ZOMBIE:(2, 4000),
-                        c.BUCKETHEAD_ZOMBIE:(4, 3000),
-                        c.NEWSPAPER_ZOMBIE:(2, 1000),
-                        c.FOOTBALL_ZOMBIE:(7, 2000),
-                        c.DUCKY_TUBE_ZOMBIE:(1, 0),  # 作为变种，不主动生成
-                        c.CONEHEAD_DUCKY_TUBE_ZOMBIE:(2, 0),    # 作为变种，不主动生成
-                        c.BUCKETHEAD_DUCKY_TUBE_ZOMBIE:(4, 0),  # 作为变种，不主动生成
-                        c.SCREEN_DOOR_ZOMBIE:(4, 3500),
-                        c.POLE_VAULTING_ZOMBIE:(2, 2000),
-                        }
+                c.NORMAL_ZOMBIE:(1, 4000),
+                c.FLAG_ZOMBIE:(1, 0),
+                c.CONEHEAD_ZOMBIE:(2, 4000),
+                c.BUCKETHEAD_ZOMBIE:(4, 3000),
+                c.NEWSPAPER_ZOMBIE:(2, 1000),
+                c.FOOTBALL_ZOMBIE:(7, 2000),
+                c.DUCKY_TUBE_ZOMBIE:(1, 0),  # 作为变种，不主动生成
+                c.CONEHEAD_DUCKY_TUBE_ZOMBIE:(2, 0),    # 作为变种，不主动生成
+                c.BUCKETHEAD_DUCKY_TUBE_ZOMBIE:(4, 0),  # 作为变种，不主动生成
+                c.SCREEN_DOOR_ZOMBIE:(4, 3500),
+                c.POLE_VAULTING_ZOMBIE:(2, 2000),
+                }
             # 将僵尸与水上变种对应
             self.convertZombieInPool = {c.NORMAL_ZOMBIE:c.DUCKY_TUBE_ZOMBIE,
                                         c.CONEHEAD_ZOMBIE:c.CONEHEAD_DUCKY_TUBE_ZOMBIE,
@@ -1191,10 +1191,7 @@ class Level(tool.State):
 
         # 整理地图信息
         if self.bar_type != c.CHOSSEBAR_BOWLING:
-            try:    # 避免炸弹等本身就不在集合里面的问题
-                self.map.removeMapPlant(map_x, map_y, targetPlant.name)
-            except KeyError:
-                pass
+            self.map.removeMapPlant(map_x, map_y, targetPlant.name)
         # 将睡眠植物移除后更新睡眠状态
         if targetPlant.state == c.SLEEP:
             self.map.map[map_y][map_x][c.MAP_SLEEP] = False