diff --git a/my_Tetris.py b/my_Tetris.py
index 8c6250c..5287b67 100644
--- a/my_Tetris.py
+++ b/my_Tetris.py
@@ -9,7 +9,7 @@ grid_num_width = 15     # 横向格子数量
 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))
@@ -114,19 +114,20 @@ while True:
         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, colors,
-                    (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)
+    
+        for cube in current_pos:
+            pygame.draw.rect(screen, colors,
+                        (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)
 
-    for i,row in zip(range(1,26),num_list):
-        for j,color in zip(range(1,16),row):
-            if color != 0:
-                pygame.draw.rect(screen, color,
-                                (j * 20-20, i * 20-20, 20, 20), 0)
-                pygame.draw.rect(screen, (255, 255, 255), 
-                                (j * 20-20, i * 20-20, 20, 20), 1)
+        for i,row in zip(range(1,26),num_list):
+            for j,color in zip(range(1,16),row):
+                if color != 0:
+                    pygame.draw.rect(screen, color,
+                                    (j * 20-20, i * 20-20, 20, 20), 0)
+                    pygame.draw.rect(screen, (255, 255, 255), 
+                                    (j * 20-20, i * 20-20, 20, 20), 1)
     # 得分
     text_surface = font.render(str(score), True, (0, 0, 0))
     screen.blit(text_surface, (350,70))
@@ -143,6 +144,7 @@ while True:
             new_list[row_index] = num_list[i]
             row_index -= 1
     num_list = new_list
+    
     # 刷新画面
     pygame.display.update()
     clock.tick(FPS)