Courier does not generally transmit novel coronavirus pneumonia. The virus cannot survive in the air alone, and this new coronavirus will die if exposed in the air for a few minutes. Therefore, courier items are generally not contaminated with the new coronavirus, after receiving the courier to try to wash their hands in a timely manner to avoid being infected by other microorganisms, as well as the need to maintain a safe distance from the contact with courier personnel. New coronavirus is highly contagious, incubation period is generally 1-14 days, a few incubation period can reach 24 days, with infectious mainly asymptomatic infected patients, incubation period patients and patients with symptoms. New coronavirus is mainly spread through airborne droplets, aerosols or close contact. The means of prevention is to keep indoor ventilation, wash hands regularly, pay attention to disinfection, wear a disposable mask when going out, and 1.5m is the safe distance.