Abstract: This paper analyzes the development status of wireless positioning technology. On this basis, this paper introduces the current situation of wireless positioning technology in coal mine, and the application of underground positioning system, and focuses on the analysis of the development status of ultra wideband positioning technology, and believes that ultra wideband technology will be a reliable guarantee for the future mine accurate positioning system. Finally, this paper analyzes the safety evaluation method of coal mine personnel positioning system, and gives the specific safety technical requirements of coal mine personnel positioning system.