diff --git a/my_Tetris.py b/my_Tetris.py
index 0eef9fb..9a1d324 100644
--- a/my_Tetris.py
+++ b/my_Tetris.py
@@ -10,7 +10,7 @@ grid_num_height = 25      # 纵向格子数量
 FPS = 30                # 帧率
 count = 0
 states = False
-
+gameover=False
 # 创建窗口
 screen = pygame.display.set_mode((460, 500))
 pygame.display.set_caption("俄罗斯方块")
@@ -54,6 +54,13 @@ def check(center):
         if cube[0] < 1 or cube[1] < 1 or cube[0] > grid_num_height \
                 or cube[1] >grid_num_width:
             return False
+        if num_list[cube[0]-1][cube[1]-1] != 0:
+            return False
+
+# 格子基础数字设为0
+num_list = []
+for i in range(25):
+    num_list.append([0] * 15)
 
 while True:
     for event in pygame.event.get():
@@ -84,36 +91,73 @@ while True:
                 if check(center) == False:
                     index = old_index
                     current_shape = shape[index]
+    if gameover==False:
+        # 生成新俄罗斯方块
+        if states == False:
+            states = True
+            center = [2, 8]     # 第2行第8列
+            shape = random.choice(shape_list)
+            index = random.randint(0, len(shape)-1)     # 随机形状索引
+            current_shape = shape[index]
+            color = random.choice(cube_colors)         # 随机选取一种颜色
+        count += 1
+        if count % FPS == 0:           # 降落速度的算式
+            center[0] = center[0] + 1
+            if check(center) == False:
+                center[0] = center[0] - 1      
+                states = False     
+                for cube in current_pos:
+                    num_list[cube[0]-1][cube[1]-1] = color 
+        # 将背景图画上去
+        screen.blit(background, (0, 0))
+        # 计算出所有小方块的行、列位置
+        current_pos = []
+        for cube in current_shape:
+            pos = (cube[0] + center[0], cube[1] + center[1])
+            current_pos.append(pos)
+        # 取出所有小方块的行、列位置，计算坐标，绘制俄罗斯方块
+        for cube in current_pos:
+            pygame.draw.rect(screen, color,
+                        (cube[1] * 20-20, cube[0] * 20-20, 20, 20), 0)
+            pygame.draw.rect(screen, (255, 255, 255), 
+                            (cube[1] * 20-20, cube[0] * 20-20, 20, 20), 1)
+        # 画出降落后的方块
+        for i, row in zip(range(1,26), num_list):
+            for j, colors in zip(range(1,16), row):
+                if colors != 0:
+                    pygame.draw.rect(screen, colors,
+                                (j * 20-20, i * 20-20, 20, 20))
+                    pygame.draw.rect(screen, (255, 255, 255),
+                                (j * 20-20, i * 20-20, 20, 20), 1)
+        new_list=[]
+        for i in range(25):
+            new_list.append([0]*15)
+        row_index=24
+        for i in range(24,-1,-1):
+            is_full=True
+            for j in range(grid_num_width):
+                if num_list[i][j]==0:
+                    is_full=False
+            if is_full==False:
+                new_list[row_index]=num_list[i]
+                row_index -= 1
+            else:   
+                score+=1
+        num_list=new_list
+        if num_list[1][7]!=0:
+            gameover=True
+            # 得分
+            text_surface = font.render(str(score), True, (0, 0, 0))
+            screen.blit(text_surface, (350,70))
+    if gameover==True:
+            text=font_restart.render("游戏失败，按任意键重新开始",True,(0,0,0))
+            screen.blit=[text,(20,250)]
+            score=0
+            num_list=[]
+            for i in range(25):
+                num_list.append([0]*15)
 
-    if states == False:
-        states = True
-        center = [2, 8]     # 第2行第8列
-        shape = random.choice(shape_list)
-        index = random.randint(0, len(shape)-1)     # 随机形状索引
-        current_shape = shape[index]
-        color = random.choice(cube_colors)         # 随机选取一种颜色
-    count += 1
-    if count % FPS == 0:           # 降落速度的算式
-        center[0] = center[0] + 1
-        if check(center) == False:
-            center[0] = center[0] - 1      
-            states = False      
-    # 将背景图画上去
-    screen.blit(background, (0, 0))
-    # 计算出所有小方块的行、列位置
-    current_pos = []
-    for cube in current_shape:
-        pos = (cube[0] + center[0], cube[1] + center[1])
-        current_pos.append(pos)
-    # 取出所有小方块的行、列位置，计算坐标，绘制俄罗斯方块
-    for cube in current_pos:
-        pygame.draw.rect(screen, color,
-                    (cube[1] * 20-20, cube[0] * 20-20, 20, 20), 0)
-        pygame.draw.rect(screen, (255, 255, 255), 
-                        (cube[1] * 20-20, cube[0] * 20-20, 20, 20), 1)
-    # 得分
-    text_surface = font.render(str(score), True, (0, 0, 0))
-    screen.blit(text_surface, (350,70))
     # 刷新画面
     pygame.display.update()
     clock.tick(FPS)
+