The main ways of transmission of the new coronavirus are droplet transmission and contact transmission. Nowadays, many people will build disinfection huts or spray disinfectant on the wheels in the community, but it is not necessary. Building disinfection huts or spraying disinfectant directly on people in the community is excessive disinfection and may be harmful to human health. If people’s skin and mucous membranes come into contact with or directly inhale high concentrations of disinfectant, it can even cause poisoning. Disinfection should be targeted, the outer surface of the car, including the body, wheels, etc., there is almost no virus, spraying disinfectant on the wheels is a meaningless practice, not only a waste of resources, but also does not play a preventive role.