Manifestations of coronavirus infection include fever, malaise, and decreased sense of smell, but some patients have no obvious clinical symptoms. Infection with coronavirus, the causative agent of novel coronavirus pneumonia, is contagious and can be transmitted through respiratory droplets and close contact. After infection with coronavirus, some patients will have symptoms such as fever, dry cough, and fatigue, and some patients will have nasal congestion, sore throat, and decreased or loss of smell and taste. However, some patients have no obvious symptoms. In some severe cases, respiratory distress and hypoxemia may occur one week after the onset of the disease, and in severe cases, even multi-organ failure may occur. It is recommended to do regular nucleic acid testing, wear a good mask when going out, avoid going to crowded public places, and if the above symptoms occur, it is recommended to seek immediate medical attention. Tip: “New coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.