Abstract: Aiming at the problems that the spatial performance of underground tunnels in two-dimensional GIS simulation maps of coal mine underground positioning systems is not intuitive and the location of personnel is inaccurate, based on the monitoring data of underground coal mine personnel positioning systems, a map management system for the precise location of underground coal mine personnel is designed based on 3D GIS. The system has precise three-dimensional coordinates, and can provide geographic information and graphical interactive interfaces for precise positioning of personnel and equipment through two-dimensional or three-dimensional modes. Practical application shows that the system can quickly construct the three-dimensional space of coal mine tunnels and accurately display the real-time location information of coal mine personnel and equipment, with space ranging, multi-layer and multi-region display, regional alarm, personnel alarm, personnel activity trajectory playback and other functions can better meet the map management needs of the underground personnel positioning system.