diff --git a/README.md b/README.md
index 2097c8f..aa20371 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ pip install flask_cors
 // 根据依赖文件安装环境
 pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple
 // 设置全局变量
-export FLASK_APP=coc.py
+export FLASK_APP=cherry.py
 export FLASK_ENV=development
 // 启动临时服务
 flask run --host=0.0.0.0 -p 8001
diff --git a/lib/db.py b/lib/db.py
index b5c454e..b5b1025 100644
--- a/lib/db.py
+++ b/lib/db.py
@@ -6,21 +6,21 @@ setting = 'development'
 
 # 获取数据集
 def col(arg):
-    conn = MongoClient('mongodb://coc:qlSfefSor5@mongo:27017/coc')
+    conn = MongoClient('mongodb://cherry:fR1jW2xG3bE9@mongo:27017/cherry')
     if setting == 'development':
         arg += '_test'
-    elif arg == 'rank':
-        return conn.coc.rank
+    if arg == 'rank':
+        return conn.cherry.rank
     elif arg == 'rank_test':
-        return conn.coc.rank_test
+        return conn.cherry.rank_test
     else:
         return False
 
 # 向排名表里增加或覆写数据
 def addRank(nick, count, time):
     try:
-        # col('rank').update({"cid":cid}, {'$setOnInsert':{"nick":nick}, '$set':{"grade":grade,"time":time}}, {'upsert':'true'})
-        col('rank').insert_one({"count":count,"time":time,"nick":nick})
+        col('rank').update({"cid":cid}, {'$setOnInsert':{"nick":nick}, '$set':{"count":count,"time":time}}, {'upsert':'true'})
+        # col('rank').insert_one({"count":count,"time":time,"nick":nick})
     except Exception as e:
         # 失败
         return {'errcode': 401, 'errmsg': '排名表修改失败'}