Neocoronaviruses can generally survive for 2 to 3 hours when exposed to air, but are also affected by a variety of factors such as temperature and humidity. If the new coronavirus is exposed to air, it can survive for about 2~3 hours. The 9th edition of the guidelines for the diagnosis and treatment of neocoronavirus mentioned that 56℃ for 30 minutes can effectively inactivate the neocoronavirus, and room temperature air usually does not reach this temperature, and the survival time of neocoronavirus may be longer when encountered with cold air. In addition, the greater the humidity, the longer the survival time, especially in the sealed environment, coupled with low temperatures, such as the common imported frozen seafood found in the new coronavirus, when the new coronavirus survival time can be up to several days. If it is carrying the new crown virus aerosol, it can survive for 2 to 3 hours or so, because the general environmental temperature does not reach 56 ℃. Tip: In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.