The air purifier is widely used in home, medical and industrial fields. The household air purifier is the mainstream product in the home market. The main function is to remove the particles in the air, including the allergen, the indoor PM2.5 and so on. At the same time, it can also solve the indoor and underground space and the air pollution of the volatile organic compounds in the car because of the decoration or other reasons. As the release of air pollutants in the relatively closed space has the characteristics of persistence and uncertainty, the use of air purifier to clean indoor air is one of the internationally recognized ways to improve indoor air quality.