Novel coronavirus is not usually transmitted by courier, and the virus cannot survive outside the body. The main way of transmission of novel coronavirus is through respiratory droplet transmission or contact transmission. If the received courier is from an infected person, it may be transmitted through contact, when using contaminated hands, rubbing the eyes, nose, eyes, the virus may enter the body through the mucous membrane and cause infection. Therefore, after receiving the courier, you can use alcohol wipe disinfection, placed in an open place for a period of time before opening.