The invention provides a car-mounted system for eliminating blind zones. The car-mounted system comprises a car body, a control system and a plurality of blind zones, wherein the car body covers the surface of a car, the control system is arranged in the car, and the multiple blind zones are distributed around the car. The car-mounted system is characterized in that the car-mounted system is composed of a plurality of environment sensors, an action sensor, a plurality of laser projectors, a man-machine interaction device, a plurality of image processing modules, a central processing module and a projection control module. Based on the system, the invention further provides a control method of the car-mounted system for eliminating the blind zones. The car-mounted system has the beneficial effects that sight blind zones of the car in the driving process are eliminated effectively, and the driving safety is improved greatly.