Integrity protection system of Android system

The invention relates to an integrity protection system of an Android system, and belongs to the technical field of intelligent device safety. The system comprises a user interface module, a background service module, a data signature module and a database module. The user interface module is in both-way communication with the background service module and the database module. The background service module is in both-way communication with the data signature module and the database module. The system can effectively carry out integrity protection on the Android system special for a Rooted system. The system is convenient to implement, an operating system does not need to be modified through the protection method, and the Android system can be protected simply by installing an application program in a Rooted Android mobile phone.