In order to solve the problems of library resources and services that can be used by the readers of University library at any time and at any place in the mobile Internet era, this system uses Sina App Engine and Android platform to build a mobile library. On the whole, the system is divided into the user side and administrator side, which are used to meet the needs of users and administrators. Users can access to the library more convenient and flexible, to accomplish the most functions of the traditional Library Web sites and mobile website system; at the same time, the library management staff can manage the library resources and services at any time and at any place by using the intelligent terminal equipment. The system greatly improves the library management level and work efficiency.