diff --git a/source/component/map.py b/source/component/map.py
index 83b4cf7..56d02de 100755
--- a/source/component/map.py
+++ b/source/component/map.py
@@ -11,27 +11,27 @@ class Map():
             self.width = c.GRID_POOL_X_LEN
             self.height = c.GRID_POOL_Y_LEN
             self.gridHeightSize = c.GRID_POOL_Y_SIZE
-            self.map = [[(c.MAP_STATE_EMPTY(), c.MAP_STATE_WATER())[y in {2, 3}] for x in range(self.width)] for y in range(self.height)]
+            self.map = [[(c.INIT_MAP_GRID(c.MAP_GRASS), c.INIT_MAP_GRID(c.MAP_WATER))[y in {2, 3}] for x in range(self.width)] for y in range(self.height)]
         elif self.background_type in c.ON_ROOF_BACKGROUNDS:
             self.width = c.GRID_ROOF_X_LEN
             self.height = c.GRID_ROOF_Y_LEN
             self.gridHeightSize = c.GRID_ROOF_Y_SIZE
-            self.map = [[c.MAP_STATE_TILE() for x in range(self.width)] for y in range(self.height)]
+            self.map = [[c.INIT_MAP_GRID(c.MAP_TILE) for x in range(self.width)] for y in range(self.height)]
         elif self.background_type == c.BACKGROUND_SINGLE:
             self.width = c.GRID_X_LEN
             self.height = c.GRID_Y_LEN
             self.gridHeightSize = c.GRID_Y_SIZE
-            self.map = [[(c.MAP_STATE_UNAVAILABLE(), c.MAP_STATE_EMPTY())[y == 2] for x in range(self.width)] for y in range(self.height)]
+            self.map = [[(c.INIT_MAP_GRID(c.MAP_UNAVAILABLE), c.INIT_MAP_GRID(c.MAP_GRASS))[y == 2] for x in range(self.width)] for y in range(self.height)]
         elif self.background_type == c.BACKGROUND_TRIPLE:
             self.width = c.GRID_X_LEN
             self.height = c.GRID_Y_LEN
             self.gridHeightSize = c.GRID_Y_SIZE
-            self.map = [[(c.MAP_STATE_UNAVAILABLE(), c.MAP_STATE_EMPTY())[y in {1, 2, 3}] for x in range(self.width)] for y in range(self.height)]
+            self.map = [[(c.INIT_MAP_GRID(c.MAP_UNAVAILABLE), c.INIT_MAP_GRID(c.MAP_GRASS))[y in {1, 2, 3}] for x in range(self.width)] for y in range(self.height)]
         else:
             self.width = c.GRID_X_LEN
             self.height = c.GRID_Y_LEN
             self.gridHeightSize = c.GRID_Y_SIZE
-            self.map = [[c.MAP_STATE_EMPTY() for x in range(self.width)] for y in range(self.height)]
+            self.map = [[c.INIT_MAP_GRID(c.MAP_GRASS) for x in range(self.width)] for y in range(self.height)]
 
     def isValid(self, map_x, map_y):
         if (map_x < 0 or map_x >= self.width or
diff --git a/source/constants.py b/source/constants.py
index 2e04c36..84ac369 100755
--- a/source/constants.py
+++ b/source/constants.py
@@ -160,14 +160,9 @@ MAP_UNAVAILABLE = 'unavailable' # 指完全不能种植物的地方，包括无
 # 地图单元格状态
 # 注意是可变对象，不能直接引用
 # 不喜欢用深拷贝，直接改用函数表示，需要时直接调用该函数生成即可
-def MAP_STATE_EMPTY():  # 由于同一格显然不可能种两个相同的植物，所以用集合
-    return {MAP_PLANT:set(), MAP_SLEEP:False, MAP_PLOT_TYPE:MAP_GRASS}
-def MAP_STATE_WATER():
-    return {MAP_PLANT:set(), MAP_SLEEP:False, MAP_PLOT_TYPE:MAP_WATER}
-def MAP_STATE_TILE():
-    return {MAP_PLANT:set(), MAP_SLEEP:False, MAP_PLOT_TYPE:MAP_TILE}
-def MAP_STATE_UNAVAILABLE():
-    return {MAP_PLANT:set(), MAP_SLEEP:False, MAP_PLOT_TYPE:MAP_UNAVAILABLE}
+# 由于同一格显然不可能种两个相同的植物，所以用集合
+def INIT_MAP_GRID(PLOT_TYPE):
+    return {MAP_PLANT:set(), MAP_SLEEP:False, MAP_PLOT_TYPE:POLT_TYPE}
 
 # 地图相关像素数据
 BACKGROUND_OFFSET_X = 220