The combination of purifier and air conditioner functions can adjust the air circulation system and human health and safety issues, and better complete the design of a new type of air conditioner in the room. The working principle of air purifiers is mainly divided into three types: passive, active, and active and passive hybrid. According to the air purifier for the removal of particulate matter in the air, there are mainly mechanical filter type, electrostatic electret filter type, high-voltage electrostatic dust collection, negative ion and plasma method. Mechanical filtration generally captures particles in the following four ways: direct interception, inertial collision, Brownian diffusion mechanism, and screening effect. It has a good collection effect on fine particles but large wind resistance. In order to obtain high purification efficiency, the resistance of the filter is relatively large., And the filter needs to be dense, resulting in reduced life, and needs to be replaced regularly.