Symptoms of novel coronavirus pneumonia usually last about 1 to 4 weeks, depending on the severity of the patient’s illness. If the patient’s infection with the new coronavirus is mild, the fever, diarrhea and malaise caused by the new coronavirus will usually last less than a week at this time. If the number of pathogens in the patient’s body is large and the degree of infection is deep, the symptoms of such severe patients, such as high fever, respiratory distress, etc., may last 2 to 4 weeks, and the time will continue to be extended if there are complications caused by the new crowns, such as shock, difficult to rectify metabolic acidosis, coagulation dysfunction, as well as acute respiratory distress syndrome, and so on. In addition to the symptoms directly caused by the new crowns, some of the sequelae of the new crowns, such as loss of smell and taste and interstitial pulmonary fibrosis, may vary in duration depending on the patient, and some symptoms may be almost irreversible. If symptoms associated with new crowns occur, it is important to seek medical attention to avoid delays. Tips] In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.