The mine-used 5G hybrid networking wireless system mainly uses 4G technology to provide voice calls, and 5G technology mainly provides high-definition video analysis, big data transmission and remote wireless control services. In this paper, the mine 5G mobile communication network is mainly composed of ground core network (CN), IP RAN ring network, baseband control unit (BBU), remote data convergence unit (RHUB), micro radio remote unit (pRRU) and other systems, and the application research scheme of 5G network in the field of coal mine communication is expounded, which can also be tailored according to the specific needs of professional users.