diff --git a/bot.py b/bot.py
index 3d45f76..fcdfc8c 100644
--- a/bot.py
+++ b/bot.py
@@ -142,6 +142,7 @@ class djtuWebsocket (Client) :
                     new_group = False
         if new_group :
             groups.groups.append(gid)
+            groups.save()
         # 解析指令
         commands:dict[str,types.MethodType|types.FunctionType] = {
             r'吃什么' : lambda :"是啊吃什么"
diff --git a/group.py b/group.py
index 13e767a..1ff3d30 100644
--- a/group.py
+++ b/group.py
@@ -5,9 +5,18 @@ class GroupCtl :
 
     path = os.path.join(os.getcwd(),"joined_group.cfg")
     groups:list[str] = [] 
-    
-    def __init__(self) -> None:
-        fd =  os.open(self.path,os.O_CREAT|os.W_OK)  
-        with open(fd) as file :
-            self.groups.append(file.readline())
 
+    def __init__(self) -> None:
+        with open(self.openfile()) as awa:
+            self.groups = awa.readlines()
+
+    def save(self):
+            # 重新加载
+            fd = self.openfile()
+            os.truncate(self.path,0)
+            os.write(fd,bytes('\n'.join(self.groups),'utf-8'))
+            os.close(fd)
+
+    def openfile(self):
+        return os.open(self.path,os.O_RDWR|os.O_CREAT)
+            
\ No newline at end of file