Places where people with novel coronavirus infections have been can be visited after thorough disinfection and sterilization. New coronavirus infection is highly contagious and can be transmitted through droplet, aerosol and contact. Generally, where a confirmed case of novel coronavirus is found, the relevant staff will disinfect and sterilize the places where the patient has been and where he/she lives, and then conduct environmental sampling and testing. The new crown virus is sensitive to such disinfectants, so basically it will be killed and is not infectious, and after rigorous disinfection and sterilization, it can enter and exit normally. Places where people infected with the new coronavirus are found will generally be actively controlled, and it is recommended that they comply with the arrangements of the epidemic prevention authorities.