diff --git a/cloud.py b/cloud.py
new file mode 100644
index 0000000..a6111c8
--- /dev/null
+++ b/cloud.py
@@ -0,0 +1,20 @@
+from settings import *
+import random
+
+class Cloud:
+    def __init__(self, game_speed):
+        # 随机设定云的x，y坐标
+        self.x = SCREEN_WIDTH + random.randint(200, 500) # 云先出现在游戏画面外，然后飞入
+        self.y = random.randint(50, 200) # 云的y坐标，即离上部分区域的距离
+        self.image = CLOUD # image 保存云的图片
+        self.width = self.image.get_width()
+        self.game_speed = game_speed
+
+    def update(self):
+        self.x -= self.game_speed
+        if self.x < -self.width: # 当云从左边出界后又从右边出来
+            self.x = SCREEN_WIDTH + random.randint(200, 500)
+            self.y = random.randint(50, 200)
+
+    def draw(self, SCREEN):
+        SCREEN.blit(self.image, (self.x, self.y))
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