The invention provides a vehicle-mounted device data processing system and a method, a data processing system. The vehicle-mounted device data processing system comprises a data acquisition device used to acquire the vehicle-mounted device data from the vehicle-mounted device; a data transmission device used to transfer the vehicle-mounted device datum to a background server; the background server used to carry on a statistic analysis towards the vehicle-mounted device data and located in a center of a central control. Comparing with a labor management, using the system to manage the vehicle-mounted device is capable of reducing a real-time management difficulty and a cost of the vehicle-mounted device.