Disclosed is a composite damping silencing plate automatic compounding machine; a plurality of bearing rollers are arranged on the horizontal plane of a frame; pressing rollers are respectively arranged above the bearing rollers and tightly abutted on the bearing rollers to form the opposite rotation relation; a heating device is arranged on the front half region of the frame and under the bearing rollers. The composite damping silencing plate automatic compounding machine has the advantages of advanced compounding mode, high work efficiency, compounding large areas of metal plate material, high automation degree and reducing the work intensity of the workers greatly. The composite damping silencing manufactured by the automatic compounding machine has the advantages of obvious shockproofand silencing effect, strong adhesion intensity between the metal plates, strong anti-impact property, maintaining stable and firm composite structure in harsh operating conditions, good oil resistance, erosion resistance and weathering resistance, maintaining good application performance in the high temperature and low temperature environments.