The new coronavirus has a very low lethality rate, but it is very harmful, with a generalized susceptibility across the population, causing a very high burden on individuals and socio-economic development, so it must be taken seriously. New Coronavirus is very harmful to human body, serious patients and critically ill patients with rapid development of the disease, and even cause some irreversible damage, if not timely treatment or even life-threatening, to the medical treatment of a great burden. The new coronavirus is extremely contagious, can be widely spread in the population, the population is generally susceptible. The recent epidemic of the Omicron strain spreads even faster and is more insidious, and may also lead to the risk of secondary infection of neococcal pneumonia. Pandemics of neocoronaviruses have a serious impact on human socio-economic development, which is why it is important to pay attention to the fact that the lethality rate is very low. Tip: The “new coronavirus pneumonia” mentioned in this article was renamed to “new coronavirus infection” on December 26, 2022 by the National Health Commission.