Alcohol should not be used to disinfect the interior of the car. Because alcohol is a flammable and explosive liquid, it is prone to fire or explosion in a confined space like a car. To avoid damaging the car’s accessories, it is recommended to use peracetic acid and chlorine dioxide as disinfectants. The surfaces of objects inside the car, such as door handles, steering wheels, windows, seats, etc., can be wiped with chlorine disinfectant, chlorine dioxide or disinfectant wipes. Private cars do not need disinfection treatment, in the open outdoors it is recommended to open windows to ventilate and change the air, in the underground garage it is recommended to close the windows and open the air conditioning internal circulation for ventilation, in the current new crown pneumonia epidemic it is recommended that passengers sit in the back row, passengers as well as the driver should wear a mask.