A vacuum cleaner is a device that causes suction in order to remove dirt from floors and other surfaces. The dirt is collected by either a dust bag or a cyclone for later disposal. We've heard of workers on the factory floor dying of pneumoconiosis, and this is a reality. The harsh production workshop environment has done great harm to people's health. As events revealed, improving the environment of production workshop area has become an important task of enterprise. Industrial vacuum cleaners can handle several hundred litres of dust. However, it will generate huge noise in use. This article will introduce several methods to reduce the noise of industrial vacuum cleaner.