Through investigation and analysis of the wearing form of the product, it is concluded that the shoulder strap type is the most reasonable. The overall shape is round and smooth, and fits the human body. The magnetic cover plate makes it more convenient to replace the filter element. The bottom body filters the air inlet, and the top mask emits the air, so there is no need to worry about air circulation. White and gray color matching enhances the elegant and gentle texture of the product. The dark black color matching meets the fashionable mentality of young people, black than black, so that masks can be so cool.