The personnel vehicle positioning function is realized, and the specific location of the vehicle is displayed on the map, and the vehicle information such as the positioning time, the mileage, the speed, the driver, the position, the alarm situation, the state of the vehicle, and the like are displayed on the map. Through the control panel to query the historical trajectory of a specific vehicle in a specific time, the trajectory of the vehicle is known. The client can remotely search for the video files on the device terminal and the server, and can view it remotely on the client.