diff --git a/change.py b/change.py
index 0048a18..7c6ff11 100644
--- a/change.py
+++ b/change.py
@@ -2,14 +2,14 @@ import ctypes
 import sys
 import os
 from time import sleep
+import shelve
 
 path = os.getcwd()
-t = False
+with shelve.open('main.db') as db:
+    bin_name = db['bin_name']
+    db.close()
 print(path)
 
-def exit1():
-    sys.exit()
-
 def is_admin():
     # 检查当前是否有管理员权限
     try:
@@ -19,26 +19,41 @@ def is_admin():
 
 if is_admin():
     # 如果已经是管理员，执行主要的逻辑
-    while t==False:
+    while True:
         print("已获得管理员权限")
+        print(f"当前模式(1为cs原版,2为csso):{bin_name}")
         print("请选择模式")
         print("1.改为csso 2.改回原版 3.退出")
         ip = input(int('>>>'))
 
         # 逻辑系统bin2为csso文件 bin1为cs原版文件 bin为现在使用的游戏文件
-        if ip == 1:
+        if ip == int(1):
+            if bin_name == int(1):
+                print('错误，你已是原版')
+                sleep(1.5)
+                sys.exit()
             os.system(f"ren {path}/bin {path}/bin1")
             os.system(f"ren {path}/bin2 {path}/bin")
+            with shelve.open('main.db') as db:
+                db['bin_name'] = int(1)
+                db.close()
             print("完成!")
             sleep(1.85)
-            exit1()
-        elif ip == 2:
+            sys.exit()
+        elif ip == int(2):
+            if bin_name == int(2):
+                print("错误,你已是csso!")
+                sleep(1.5)
+                sys.exit()
             os.system(f"ren {path}/bin {path}/bin2")
             os.system(f"ren {path}/bin1 {path}/bin")
+            with shelve.open('main.db') as db:
+                db['bin_name'] = int(2)
+                db.close()
             print("完成!")
             sleep(1.55)
-            exit1()
-        elif ip == 3:
+            sys.exit()
+        elif ip == int(3):
             sys.exit()
         else:
             print("输入错误!")