The incubation period of novel coronavirus pneumonia is 3-7 days, with a maximum of 14 days. Novel coronavirus is also contagious during the incubation period and is most contagious when the patient develops a high fever. Patients have no symptoms during the incubation period, and the main manifestations of the disease are fever, malaise, dry cough, and in some cases, nasal congestion, runny nose, and diarrhea. However, some patients have a low to moderate fever or even no obvious fever at the onset, and some have mild symptoms. Therefore, special attention should be paid, and most patients have a good prognosis.