diff --git a/source/component/menubar.py b/source/component/menubar.py
index bcc8e3f..1100c23 100755
--- a/source/component/menubar.py
+++ b/source/component/menubar.py
@@ -550,4 +550,4 @@ class MoveBar():
     def draw(self, surface):
         surface.blit(self.image, self.rect)
         for card in self.card_list:
-            card.draw(surface)
\ No newline at end of file
+            card.draw(surface)
diff --git a/source/state/level.py b/source/state/level.py
index 990fa28..68ba268 100644
--- a/source/state/level.py
+++ b/source/state/level.py
@@ -220,7 +220,11 @@ class Level(tool.State):
                     if current_time - self.waveTime > 1500:
                         for item in self.graveSet:
                             itemX, itemY = self.map.getMapGridPos(*item)
-                            self.zombie_groups[item[1]].add(zombie.NormalZombie(itemX, itemY, self.head_group))
+                            # 目前设定：2/3概率普通僵尸，1/3概率路障僵尸
+                            if randint(0, 2):
+                                self.zombie_groups[item[1]].add(zombie.NormalZombie(itemX, itemY, self.head_group))
+                            else:
+                                self.zombie_groups[item[1]].add(zombie.ConeHeadZombie(itemX, itemY, self.head_group))
                         self.graveZombieCreated = True
             elif self.map_data[c.BACKGROUND_TYPE] in {c.BACKGROUND_POOL, c.BACKGROUND_FOG}:
                 if not self.createdZombieFromPool:
diff --git a/source/state/mainmenu.py b/source/state/mainmenu.py
index 7e3265b..55649e4 100644
--- a/source/state/mainmenu.py
+++ b/source/state/mainmenu.py
@@ -175,4 +175,4 @@ class Menu(tool.State):
         surface.blit(self.bg_image, self.bg_rect)
         surface.blit(self.adventure_image, self.adventure_rect)
         surface.blit(self.exit_image, self.exit_rect)
-        surface.blit(self.littleGame_image, self.littleGame_rect)
\ No newline at end of file
+        surface.blit(self.littleGame_image, self.littleGame_rect)
diff --git a/source/state/screen.py b/source/state/screen.py
index c76080b..c865f4d 100644
--- a/source/state/screen.py
+++ b/source/state/screen.py
@@ -54,4 +54,4 @@ class GameLoseScreen(Screen):
         return c.GAME_LOSE_IMAGE
     
     def set_next_state(self):
-        return c.LEVEL
\ No newline at end of file
+        return c.LEVEL