diff --git a/mudb.json b/mudb.json
index 22fad21..0d4f101 100644
--- a/mudb.json
+++ b/mudb.json
@@ -1,26 +1,2 @@
 [
-	{
-		"user": "admin",
-		"port": 443,
-		"u": 0,
-		"d": 0,
-		"transfer_enable": 1125899906842624,
-		"passwd": "admin",
-		"method": "aes-128-cfb",
-		"protocol": "auth_sha1_v2_compatible",
-		"obfs": "tls1.2_ticket_auth_compatible",
-		"enable": true
-	},
-	{
-		"user": "user001",
-		"port": 10001,
-		"u": 0,
-		"d": 0,
-		"transfer_enable": 1099511627776,
-		"passwd": "abc123",
-		"method": "rc4-md5",
-		"protocol": "auth_sha1_v2_compatible",
-		"obfs": "http_post_compatible",
-		"enable": true
-	}
 ]
diff --git a/mujson_mgr.py b/mujson_mgr.py
index 092baf8..4518c6f 100644
--- a/mujson_mgr.py
+++ b/mujson_mgr.py
@@ -4,6 +4,7 @@
 import traceback
 from shadowsocks import common, shell
 from configloader import load_config, get_config
+import random
 import getopt
 import sys
 import json
@@ -48,11 +49,15 @@ class MuMgr(object):
 				ret += "    %s : %s" % (key, user[key])
 		return ret
 
+	def rand_pass(self):
+		return b''.join([random.choice(b'''ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789~-_=+(){}[]^&%$@''') for i in range(8)])
+
 	def add(self, user):
-		up = {'enable': True, 'u': 0, 'd': 0, 'passwd': "m", 'method': "aes-128-cfb",
+		up = {'enable': True, 'u': 0, 'd': 0, 'method': "aes-128-cfb",
 		'protocol': "auth_sha1_v2_compatible",
 		'obfs': "tls1.2_ticket_auth_compatible",
 		'transfer_enable': 1125899906842624}
+		up['passwd'] = self.rand_pass()
 		up.update(user)
 
 		self.data.load(self.config_path)