COVID stands for Corona virus disease, or coronavirus disease, and COVID-19 is novel coronavirus pneumonia. The exact origin of the novel coronavirus is still unknown, but it can be transmitted from person to person by respiratory droplets, close contact and aerosol transmission. Therefore, face-to-face conversations, coughing and sneezing with the patient may pose a risk of infection, as well as contact with the patient’s secretions or contaminated objects. In order to better block contact with the virus, in addition to vaccination, it is necessary to maintain a social distance of at least 1 meter or even 2 meters in daily social life, which can effectively reduce or block droplet transmission, and at the same time, it is necessary to correctly wear a good mask, avoid contact with infected people and their contaminated items, and always do a good job of hand hygiene. At present, there is no effective treatment for COVID, and symptomatic treatment and supportive therapy are still the mainstay. Therefore, in addition to taking proper precautions against the epidemic, we also need to strengthen the exercise to improve the body’s immune system, so as to better resist the infection of the virus, and to reduce the damage caused by the virus to the body. [Tip] In this article, “new coronary pneumonia, new coronary virus pneumonia” has been renamed to “new coronary virus infection” on December 26, 2022, as announced by the National Health Commission.