Currently, novel coronaviruses are mainly transmitted by proximity respiratory droplets or by contact. After the virus-carrying droplets settle to the ground after coughing, shoes may be contaminated, and if the shoes are worn home, the virus may be carried back, increasing the risk of infection. Therefore, it is recommended to change into slippers at the door in time after returning home. Although the shoes may be contaminated with virus, the amount of virus carried is small, and there is no need to disinfect the soles of the shoes, just keep them clean.