Effective hand disinfection lasts about three minutes after the collection of a new crown nucleic acid sample. If the collection of new crown nucleic acid samples, at this time the outer gloves may be contaminated, first need to take 75% alcohol and other disinfectants sprayed on the hands, and then strictly in accordance with the seven-step hand washing method, each step needs to be carried out for more than 15 seconds, the whole process lasts for about three minutes, generally can be effective to eliminate the virus on the hands. Because the new crown virus can be effectively inactivated using a variety of disinfectants, 75% alcohol, chlorine disinfectant, etc. can be relatively fast to kill the new crown virus, so the general standardization of hand hygiene can play a better preventive role. New crown nucleic acid sample collection generally need to undergo professional training to be able to work, not standardized operation may have the risk of infection exists.