diff --git a/tools/migratedb/migratedb.py b/tools/migratedb/migratedb.py
index de85e8c..3ce4f73 100644
--- a/tools/migratedb/migratedb.py
+++ b/tools/migratedb/migratedb.py
@@ -18,38 +18,32 @@ context = {
     'dbname_prefix': ''
 }
 
-def md5Str(data):
-    m = hashlib.md5()
-    m.update(data)
-    return m.hexdigest()
+def scanKeys(r, key_prefix, keys):
+    scan_key = key_prefix + '*'
+    cursor, keys = r.scan(0, scan_key, 1000)
+    scan_count = 0
+    while cursor != 0 or len(keys) > 0:
+        #end
+        keys = []
+        if cursor != 0:
+            cursor, keys = r.scan(cursor, scan_key, 1000)
+            scan_count += 1
+        if scan_count > 10000:
+            break
+    #end while cursor
 
-def fetchAllAccount(context, db_conf, all_account_hash):
-    for conf in db_conf:
-        conn = pymysql.connect(host = conf['host'],
-                               port = conf['port'],
-                               user = conf['user'],
-                               passwd = conf['passwd'],
-                               db = context['dbname_prefix'] + str(conf['instance_id']),
-                               charset = 'utf8'
+def exportRedis(context, redis_conf, redis_rule_conf):
+    for conf in redis_conf:
+        r = redis.Redis(host = conf['host'],
+                        port = conf['port'],
+                        password = conf['passwd'],
+                        charset = 'utf8'
         )
-        cursor = conn.cursor()
-        last_idx = 0
-        while True:
-            cursor.execute('SELECT idx, accountid FROM user '
-                           'WHERE idx > %s AND accountid LIKE "%s_\%" LIMIT 0, 10000;' %
-                           (last_idx,
-                            context['dbname_prefix']
-                           ))
-            has_data = False
-            for row in cursor:
-                has_data = True
-                all_account_hash[row[1]] = {
-                    'md5' : md5Str(row[1])
-                }
-                if row[0] > last_idx:
-                    last_idx = row[0]
-            if not has_data:
-                break
+        for rule in redis_rule_conf:
+            keys = {}
+            scanKeys(r, rule['key_prefix'], keys)
+        #end for rule
+    #end for conf
 
 def main():
     global context
@@ -57,8 +51,7 @@ def main():
     redis_conf = json.loads(open(CONFIG_DIR + '/redis_list.json', 'r').read())
     db_rule_conf = json.loads(open(CONFIG_DIR + '/mysql_rule.json', 'r').read())
     redis_rule_conf = json.loads(open(CONFIG_DIR + '/redis_rule.json', 'r').read())
-    all_account_hash = {}
-    fetchAllAccount(context, db_conf, all_account_hash)
+    exportRedis(context, redis_conf, redis_rule_conf)
 
 if __name__ == "__main__":
     main()