New coronary generally refers to the new coronary virus, the use of alcohol disinfection is useful for killing the new coronary virus, but should pay attention to the use of 70% -75% of the medical alcohol, the concentration should not be too high or too low. The new coronavirus is also a kind of coronavirus, alcohol can make the new coronavirus membrane surface glycoproteins dehydration denaturation, but also to its genetic material to destroy, so that the virus is inactive, so the use of alcohol for the surface of the object preventive disinfection, can effectively block the new coronavirus contact transmission. For the new coronavirus, the general use of alcohol concentration of 70% -75% of the medical alcohol, because of its bactericidal effect is the most ideal.