The invention provides a multimedia navigation reversing system based on a WINCE platform. Through combination of a micro-processing module, a reversing video signal processing module, a main controlmodule, a CAN transceiving module, a vehicle CAN network, a display module and a reversing camera, a vehicle is controlled while reversing, and the real-time response effect of the reversing treatmentis reduced; and the situation that as for multimedia navigation, other tasks need to be handled with at the same time and consequently no response is given to reversing operation is effectively avoided, and meanwhile the reliability and stability when the system handles with the multiple tasks are improved.