diff --git a/source/component/plant.py b/source/component/plant.py
index c7b9864..0db0a42 100755
--- a/source/component/plant.py
+++ b/source/component/plant.py
@@ -593,7 +593,7 @@ class PotatoMine(Plant):
         self.is_init = True
         self.init_timer = 0
         self.bomb_timer = 0
-        self.explode_x_range = c.GRID_X_SIZE
+        self.explode_x_range = c.GRID_X_SIZE / 2
 
     def loadImages(self, name, scale):
         self.init_frames = []
@@ -621,8 +621,8 @@ class PotatoMine(Plant):
                 self.is_init = False
 
     def canAttack(self, zombie):
-        if (not self.is_init and (not zombie.lostHead) and
-                (abs(zombie.rect.x - self.rect.x) <= self.explode_x_range*0.8)):
+        if (pg.sprite.collide_circle_ratio(0.6)(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 406cb3b..d159dfb 100644
--- a/source/state/level.py
+++ b/source/state/level.py
@@ -1015,7 +1015,8 @@ class Level(tool.State):
                 self.hypno_zombie_groups[map_y].add(zombie)
             elif (plant.name == c.POTATOMINE and not plant.is_init):    # 土豆雷不是灰烬植物，不能用Boom
                 for zombie in self.zombie_groups[map_y]:
-                    if ((abs(zombie.rect.centerx - x) <= plant.explode_x_range) or
+                    if ((pg.sprite.collide_circle_ratio(0.6)(zombie, plant)) or
+                    (abs(zombie.rect.centerx - x) <= plant.explode_x_range) or
                     ((zombie.rect.right - (x-plant.explode_x_range) > 20) or (zombie.rect.right - (x-plant.explode_x_range))/zombie.rect.width > 0.2, ((x+plant.explode_x_range) - zombie.rect.left > 20) or ((x+plant.explode_x_range) - zombie.rect.left)/zombie.rect.width > 0.2)[zombie.rect.x > x]):  # 这代码不太好懂，后面是一个判断僵尸在左还是在右，前面是一个元组，[0]是在左边的情况，[1]是在右边的情况
                         zombie.setDamage(1800, damageType=c.ZOMBIE_RANGE_DAMAGE)
             elif plant.name != c.WALLNUTBOWLING: