A concentration of 75% hospital alcohol is able to kill the coronavirus. Because the concentration of 75% hospital alcohol can absorb the water of the virus protein and make it dehydrated, so it can achieve the purpose of killing the virus. Concentration of 75% medical alcohol is more suitable for object surface and hand, skin parts of the disinfection, and for the disinfection of human mucous membranes, clothing disinfection, air disinfection or large area spraying for indoor disinfection is not suitable for use. Alcohol has a low ignition point, so care should be taken to prevent fire when using alcohol for disinfection. In addition, ether, peroxyacetic acid, chlorine disinfectants, chloroform and other fat solvents can also kill coronaviruses. In general to prevent the emergence of coronavirus, the first step is to control the source of infection, reduce going out and pay attention to personal hygiene.