This project is to provide noise control for three integrated compressor sets and install the broadband silencer developed by us at the blow-off port of the compressor. The wall structure is a double- composite sound-absorbing body, of which the inner is a sound-absorbing module to reduce indoor reverberation. Moreover, an intake filter is installed on the side wall. The overall noise reduction capacity is up to 40-45dB (A). After governance, the noise can meet the requirements of Class II standards.