New coronaviruses can only survive in the body fluid environment and are difficult to survive once removed from the body fluid environment. If the external temperature is high, the virus survival time will be shortened, usually 56℃ for 30 minutes to inactivate all new coronaviruses. In addition, humidity will also affect the survival time of the virus. If the temperature and humidity are suitable, the new coronavirus may survive for several days. For example, in a 20°C environment with 40%-50% humidity, the virus may survive for up to 5 days. Therefore, it is important to do a good job of personal protection and disinfection during home and after returning home from an outing to reduce the risk of infection.