Whether alcohol can kill the virus depends on the concentration of alcohol and the length of time that alcohol is in contact with the virus to make an objective analysis, as follows: a. If the patient uses 75% alcohol to disinfect the infected wound, the necrotic tissue of the wound is in full contact with alcohol for enough time, or alcohol gauze is used to apply a local wet compress for 3-5 minutes, at which time the alcohol can effectively kill the virus of the wound and play a better disinfection effect. Second, if the patient uses less than 75% alcohol to disinfect the trauma, and the contact time between alcohol and trauma is short when disinfection is carried out, and continuous disinfection is not achieved, the virus in the trauma is often not completely killed at this time, and the residue of the virus will be caused, and the effect of complete disinfection is not achieved.