In order to further meet the needs of the development of modern buildings, the technical improvement, design and manufacture of WGD type damping butterfly valve composite electric butterfly valve are carried out. The damping butterfly valve and damping pad are used together to overcome its shortcomings. It has the advantages of compound vibration and noise reduction, low natural frequency, good vibration isolation effect, and is superior to the sound transmission of isolated solids, especially to the sound transmission of isolated high-frequency impact