Alcohol, as a common disinfectant, has a killing effect on pathogenic microorganisms. The national manual for the treatment of new coronaviruses also clearly states that alcohol can be used for disinfection of coronaviruses. However, there are two concentrations of alcohol, 75% and 95%. Generally 75% alcohol can effectively kill the new coronavirus in the air and on the surface of goods. If 95% alcohol is used, it may cause some irritation to the skin, so 95% is not generally used to kill the new coronavirus. Usually you can use 75% alcohol to spray in the air, or use a wet paper towel with up alcohol, to disinfect the surface of commonly used items can be.