The novel coronavirus is disinfected with alcohol, and at this time, 75% medical alcohol is mostly chosen to avoid too high or too low concentrations that could affect its disinfection. According to the biological characteristics of the novel coronavirus, 75% alcohol, chlorinated disinfectants, peroxyacetic acid and chloroform can inactivate the virus and make it less infectious, thus reducing its infection rate. Disinfection with alcohol is mainly aimed at the close contact transmission route of novel coronavirus, thus reducing the incidence of infection. However, it should also be noted that alcohol is flammable, and the method of disinfection with alcohol is mainly for local disinfection of articles or hands, with more local wiping, avoiding direct spraying of alcohol on the air, especially not on clothing and human body, to avoid fire and safety hazards, and paying attention to avoid dripping when using alcohol, so disinfection with alcohol is one of the common preventive measures for novel coronavirus.