Positive neocoronavirus antigen suggests a possible infection with neocoronavirus, which requires further testing for neocoronavirus nucleic acid and other clarifications. Positive New Crown Antigen suggests that the patient may be infected with New Crown Virus, and further testing of New Crown Virus nucleic acid is needed. If positive, the patient can be clearly infected with New Crown Virus and needs to be isolated and treated immediately. Positive neocoronavirus antigen indicates that the antigen of neocoronavirus may be present in the body. It is contagious. Close contacts also need to be isolated for observation New crown antigen positive need to improve the nucleic acid test, chest imaging examination. Chest CT should also be performed to determine whether the patient has developed neocoronavirus pneumonia. These patients should pay attention to supplemental nutrition, pay more attention to rest, pay attention to the recovery of the disease. Tips] In this article, “new coronary pneumonia” and “new coronary virus pneumonia” were renamed to “new coronary virus infection” on December 26, 2022, as announced by the National Health Commission.