diff --git a/.gitignore b/.gitignore
index e4cf155..feb7369 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ __temp
 .DS_Store
 docklet.conf
 home.html
+src/migrations/
diff --git a/prepare.sh b/prepare.sh
index bcddb85..eaba6fe 100755
--- a/prepare.sh
+++ b/prepare.sh
@@ -16,7 +16,7 @@ fi
 # some packages' name maybe different in debian
 apt-get install -y cgmanager lxc lxcfs lxc-templates lvm2 bridge-utils curl exim4 openssh-server openvswitch-switch
 apt-get install -y python3 python3-netifaces python3-flask python3-flask-sqlalchemy python3-pampy python3-httplib2
-apt-get install -y python3-psutil
+apt-get install -y python3-psutil python3-flask-migrate
 apt-get install -y python3-lxc
 apt-get install -y python3-requests python3-suds
 apt-get install -y nodejs nodejs-legacy npm
@@ -60,7 +60,7 @@ if [ ! -d /opt/docklet/local/basefs ]; then
 	echo "Generating basefs"
 	wget -P /opt/docklet/local http://iwork.pku.edu.cn:1616/basefs-0.11.tar.bz2 && tar xvf /opt/docklet/local/basefs-0.11.tar.bz2 -C /opt/docklet/local/ > /dev/null
 	[ $? != "0" ] && echo "Generate basefs failed, please download it from http://unias.github.io/docklet/download to FS_PREFIX/local and then extract it using root. (defalut FS_PRERIX is /opt/docklet)"
-fi 
+fi
 
 echo "Some packagefs can be downloaded from http://unias.github.io/docklet.download"
 echo "you can download the packagefs and extract it to FS_PREFIX/local using root. (default FS_PREFIX is /opt/docklet"
diff --git a/src/manage.py b/src/manage.py
new file mode 100644
index 0000000..f947b9a
--- /dev/null
+++ b/src/manage.py
@@ -0,0 +1,11 @@
+from flask_migrate import Migrate,MigrateCommand
+from model import *
+from flask_script import Manager
+from flask import Flask
+
+migrate = Migrate(app,db)
+manager = Manager(app)
+manager.add_command('db',MigrateCommand)
+
+if __name__ == '__main__':
+    manager.run()
diff --git a/src/model.py b/src/model.py
index 4f9cefb..f314494 100755
--- a/src/model.py
+++ b/src/model.py
@@ -45,6 +45,7 @@ app.config['SQLALCHEMY_BINDS'] = {
     'beansapplication': 'sqlite:///'+fsdir+'/global/sys/BeansApplication.db',
     'system': 'sqlite:///'+fsdir+'/global/sys/System.db'
     }
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True
 try:
     secret_key_file = open(env.getenv('FS_PREFIX') + '/local/token_secret_key.txt')
     app.secret_key = secret_key_file.read()
@@ -346,3 +347,11 @@ class VCluster(db.Model):
 
     def __repr__(self):
         return "{\"clusterid\":\"%d\", \"clustername\":\"%s\", \"ownername\": \"%s\", \"status\":\"%s\", \"size\":\"%d\", \"proxy_server_ip\":\"%s\", \"create_time\":\"%s\"}" % (self.clusterid, self.clustername, self.ownername, self.status, self.size, self.proxy_server_ip, self.create_time.strftime("%Y-%m-%d %H:%M:%S"))
+
+class Image(db.Model):
+    __bind_key__ = 'system'
+    imagename = db.Column(db.String(50))
+    id = db.Column(db.BigInteger, primary_key=True)
+    isshared = db.Column(db.Boolean)
+    ownername = db.Column(db.String(20))
+    description = db.Column(db.Text)