Abstract: Most of the existing accurate positioning systems for underground personnel are based on UWB positioning technology and adopt the layout mode of personnel positioning card + positioning substation, which can achieve centimeter-level high-precision positioning without occlusion. When underground personnel travel, it is difficult to achieve accurate positioning of passengers due to the influence of a large range of metal occlusion of mining vehicles and dense factors in the compartment on positioning accuracy. To address the above issues, a method for identifying and locating underground personnel in a vehicle is designed. The status of personnel in a vehicle is recognized through multiple information such as vehicle speed monitoring, positioning card posture, and in-vehicle distance measurement. While the onboard positioning card measures distance with the positioning substation in the tunnel, the information of passengers in a vehicle is transmitted to the positioning substation through message reuse, the positioning substation uploads passenger information to the ground data center through the mine ring network. The test results show that the method has a high accuracy in identifying personnel in a vehicle, and the location information of passengers is synchronized with the vehicle position, which can effectively solve the positioning problem of underground personnel boarding.