A vehicle-mounted robot system comprises an OBD acquisition terminal, a video acquisition terminal, an intelligent robot and a cloud system, the OBD acquisition terminal and the video acquisition terminal are both connected with the intelligent robot, and the intelligent robot is connected with the cloud system; the intelligent robot comprises a driving behavior recognition module, an image processing module, a local storage module, a wireless communication module, a voice playing module and a screen display module. The cloud system comprises a message queue, a cache, a database and an Internet of Things gateway. The driving management method of the vehicle-mounted robot system comprises the steps of conventional vehicle driving behavior management, dangerous driving behavior management, driving safety management, voice broadcasting and light reminding, real-time ornament monitoring, illegal prototype analysis and energy supply reminding. According to the system and the driving management method thereof, the functions of comprehensive monitoring, safe driving and intelligent management of the vehicle are realized, and the running vehicle can be effectively monitored.