The utility model provides a voltage differential control power-driven vehicle system for inputting gear signals into a model processer, and belongs to a front-wheel-and-rear-wheel differential distribution power-driven bicycle power supply controller system for conducting differential power electricity supplying on both a front wheel and a rear wheel. The voltage differential control power vehicle system comprises two wheels and two motors of an electric power bicycle and a manual gear signal controller and further comprises a differential controller. The differential controller comprises three modules which are sequentially connected. The first module is used for conducting numerical value comparison and processing on an original input signal feedback control signal IA and an IB which are used for controlling. The second module is used for conducting model function processing on the data of the first module through the gear singles of the manual gear signal controller by selecting a model function set in a model function storage. According to the third module, a controller A and a controller B process the model function and distribute the model function to a controlled electric appliance. The voltage differential control power-driven vehicle system has the advantages that differential control power supply is conducted on the two motors of the front wheel and the rear wheel of the power-driven bicycle, and the content of the differential control is the preset model function processing.