diff --git a/scene.py b/scene.py
new file mode 100644
index 0000000..83c184b
--- /dev/null
+++ b/scene.py
@@ -0,0 +1,88 @@
+'''
+定义场景元素(地板, 云等)
+'''
+import pygame
+
+
+'''地板'''
+class Ground(pygame.sprite.Sprite):
+	def __init__(self, imagepath, position, **kwargs):
+		pygame.sprite.Sprite.__init__(self)
+		# 导入图片
+		self.image_0 = pygame.image.load(imagepath)
+		self.rect_0 = self.image_0.get_rect()
+		self.rect_0.left, self.rect_0.bottom = position
+		self.image_1 = pygame.image.load(imagepath)
+		self.rect_1 = self.image_1.get_rect()
+		self.rect_1.left, self.rect_1.bottom = self.rect_0.right, self.rect_0.bottom
+		# 定义一些必要的参数
+		self.speed = -10
+	'''更新地板'''
+	def update(self):
+		self.rect_0.left += self.speed
+		self.rect_1.left += self.speed
+		if self.rect_0.right < 0:
+			self.rect_0.left = self.rect_1.right
+		if self.rect_1.right < 0:
+			self.rect_1.left = self.rect_0.right
+	'''将地板画到屏幕'''
+	def draw(self, screen):
+		screen.blit(self.image_0, self.rect_0)
+		screen.blit(self.image_1, self.rect_1)
+
+
+'''云'''
+class Cloud(pygame.sprite.Sprite):
+	def __init__(self, imagepath, position, **kwargs):
+		pygame.sprite.Sprite.__init__(self)
+		# 导入图片
+		self.image = pygame.image.load(imagepath)
+		self.rect = self.image.get_rect()
+		self.rect.left, self.rect.top = position
+		# 定义一些必要的参数
+		self.speed = -1
+	'''将云画到屏幕上'''
+	def draw(self, screen):
+		screen.blit(self.image, self.rect)
+	'''更新云'''
+	def update(self):
+		self.rect = self.rect.move([self.speed, 0])
+		if self.rect.right < 0:
+			self.kill()
+
+
+'''记分板'''
+class Scoreboard(pygame.sprite.Sprite):
+	def __init__(self, imagepath, position, size=(11, 13), is_highest=False, bg_color=None, **kwargs):
+		pygame.sprite.Sprite.__init__(self)
+		# 导入图片
+		self.images = []
+		image = pygame.image.load(imagepath)
+		for i in range(12):
+			self.images.append(pygame.transform.scale(image.subsurface((i*20, 0), (20, 24)), size))
+		if is_highest:
+			self.image = pygame.Surface((size[0]*8, size[1]))
+		else:
+			self.image = pygame.Surface((size[0]*5, size[1]))
+		self.rect = self.image.get_rect()
+		self.rect.left, self.rect.top = position
+		# 一些必要的变量
+		self.is_highest = is_highest
+		self.bg_color = bg_color
+		self.score = '00000'
+	'''设置得分'''
+	def set(self, score):
+		self.score = str(score).zfill(5)
+	'''画到屏幕上'''
+	def draw(self, screen):
+		self.image.fill(self.bg_color)
+		for idx, digital in enumerate(list(self.score)):
+			digital_image = self.images[int(digital)]
+			if self.is_highest:
+				self.image.blit(digital_image, ((idx+3)*digital_image.get_rect().width, 0))
+			else:
+				self.image.blit(digital_image, (idx*digital_image.get_rect().width, 0))
+		if self.is_highest:
+			self.image.blit(self.images[-2], (0, 0))
+			self.image.blit(self.images[-1], (digital_image.get_rect().width, 0))
+		screen.blit(self.image, self.rect)
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