This project is to provide noise control for two integrated compressor sets, of which the broadband silencer developed by us is installed at the blow-off port of one compressor and the secondary silencer is arranged on the other compressor. The wall structure is a double- composite sound-absorbing body, of which the inner is a sound-absorbing module to reduce indoor reverberation; the boundary is relatively close to farmers, so that sound barriers are built at sensitive points within the boundary. The overall noise reduction capacity is up to 40-45dB (A). After governance, the noise can meet the requirements of Class II standards.