(With the development of science and technology, coal mine safety assurance has become increasingly important. With the rapid development and pervasion of smart phones and 3G networks, the conditions for smart phones to be used in coal mine safety systems have matured. Smart phones can realize functions such as personnel positioning, video and picture display. This paper launches a set of coal mine safety system client that can realize the above functions based on Android smartphone platform. The client software has been used in practice, and the following attachments are included in this document:)