Vehicle-to-vehicle communication system and vehicle-to-vehicle communication method

The invention provides a vehicle-to-vehicle communication system and a vehicle-to-vehicle communication method. The vehicle-to-vehicle communication system is arranged in a main vehicle. Multiple surrounding vehicles exist around the main vehicle. The vehicle-to-vehicle communication system comprises an image capturing module, a wireless communication module and a processing unit, wherein the image capturing module captures images containing a vehicle license plate number of each surrounding vehicle; the wireless communication module receives broadcasting information from each surrounding vehicle, and the broadcasting information contains driving reference information and the vehicle license plate number of the surrounding vehicle; and the processing unit recognizes the vehicle license plate number of the surrounding vehicle according to the image so as to determine the relative position between the main vehicle and the surrounding vehicle. The processing unit gives different priorities to the surrounding vehicles according to the relative position between the main vehicle and the surrounding vehicle and the driving intention of the main vehicle. The processing unit carries out priority processing on the driving reference information of the surrounding vehicle with the highest priority. Correct, instant and useful driving reference information can be provided for a driver.