The car is one of the means of transportation for our daily travel. Many people have the habit of placing sachets or car fragrance in the car, so that you can smell a good smell when you enter the car, and maintaining good hygiene in the car can also benefit Our physical and mental pleasure. The car air purifier integrates the characteristics of car fragrance and ordinary air purifier, and has the functions of sterilization, dust collection, deodorization, in addition to formaldehyde, antibacterial and detoxification. The designer takes fresh driving as the starting point, and innovates design from the aspects of appearance design, material selection, color matching, functional use, etc., to provide car drivers with a clean and comfortable driving environment. The appearance design of the car air purifier is simple, small and exquisite, easy to carry, with different color combinations, and there are indicator devices. The indicator light will emit different colors of light according to the different air quality; in terms of function, the car air purifier design is made of wear-resistant and high-temperature resistant materials, combined with HEPA and HESA technology, using filter purification methods, multiple filter combinations, it can purify fine particle pollution, chemical gas, bacteria, etc. in all aspects and efficiently, and completely remove pollutants in the car. The car air purifier is equipped with human body induction control (MSS), which can adjust the wind speed mode by waving at 3cm above the sensor to reduce bacterial cross infection. The air purifier is divided into weak wind mode, strong wind mode and switch mode of power-on and shutdown. The default mode is weak wind mode when power-on, and high-speed snail fan is adopted without noise. After power-on, the negative ion lamp lights up and starts working; the air purifier can also display the humidity and air quality in the current ambient air in real time when it is running. The air purifier has a multi-function high-definition screen display, which can see the air volume display, negative ion working status, power-on status, temperature digital display, humidity digital display and air quality ambient light display. The car air purifier is very simple and convenient to use, and the size is small. It can be applied not only in the car, but also carried with you. It can also be used indoors and is suitable for different environments.