diff --git a/gameRole.py b/gameRole.py
index 2d04a68..7a489be 100644
--- a/gameRole.py
+++ b/gameRole.py
@@ -39,10 +39,15 @@ def __init__(self, plane_img, player_rect, init_pos):
         self.bullets = pygame.sprite.Group()            # 玩家飞机所发射的子弹的集合
         self.img_index = 0                              # 玩家精灵图片索引
         self.is_hit = False                             # 玩家是否被击中
+        self.is_gun_ready = True
 
     def shoot(self, bullet_img):
         bullet = Bullet(bullet_img, self.rect.midtop)
         self.bullets.add(bullet)
+        self.is_gun_ready = False
+
+    def reload(self):
+        self.is_gun_ready = True
 
     def moveUp(self):
         if self.rect.top <= 0:
diff --git a/mainGame.py b/mainGame.py
index 91df38f..bbc6e74 100644
--- a/mainGame.py
+++ b/mainGame.py
@@ -81,9 +81,8 @@
 
     # 控制发射子弹频率,并发射子弹
     if not player.is_hit:
-        if shoot_frequency % 15 == 0:
-            bullet_sound.play()
-            player.shoot(bullet_img)
+        if shoot_frequency % 10 == 0:
+            player.reload()
         shoot_frequency += 1
         if shoot_frequency >= 15:
             shoot_frequency = 0
@@ -179,6 +178,10 @@
             player.moveLeft()
         if key_pressed[K_d] or key_pressed[K_RIGHT]:
             player.moveRight()
+        if key_pressed[K_SPACE] or key_pressed[K_SPACE]:
+            if player.is_gun_ready:
+                bullet_sound.play()
+                player.shoot(bullet_img)
 
 
 font = pygame.font.Font(None, 48)