This is an air purifier product designed for portable use. Portable air purifiers are still a niche product at present. After investigation, we found that the main users of air purifiers on the market are family members, office workers, etc., because they have the need for portable sterilization and odor removal. However, we think that urban office workers are also potential users of air purifiers, and they will hope to be able to carry out business trips and other tasks more healthily. We also found that the structure of some competing products on the market has been relatively, however, there are also shortcomings such as unfashionable appearance, unfriendly operation experience and relatively conventional purification technology. The highlight of our design is that our portable air purifier can be used without plug-in without dragging a long wire at a time. In addition, we have also simplified the design of the air purifier. We hope that through our design, we can provide office workers with a simpler, more efficient and pleasant travel experience.