In this project, noise control is carried out for biogas generator sets, the sound enclosure is adopted in main body and plate type silencers are installed at the inlet and outlet. In order to improve sound insulation and reduce noise generated by vibration, damping plates are installed inside the wall. After installation, the noise outside the room during equipment operation can meet the requirement of less than 85dB (A), while the original noise of the equipment is greater than 125dB (A).