There are many causes of coughing, including nasopharyngitis, upper airway cough syndrome, cough variant asthma, post-infectious cough, etc. It is not possible to determine whether it is a new coronavirus infection by simply coughing all the time. The initial symptoms of new coronavirus pneumonia are mainly fever, dry cough, and malaise, and a few patients have nasal congestion, runny nose, sore throat, myalgia, and diarrhea. Severely ill patients tend to develop respiratory distress and/or hypoxemia a week after onset, and severe cases may progress rapidly to acute respiratory distress syndrome. The presence of cough should be observed for clinical manifestations other than cough, such as fever and malaise, for an epidemiological history of novel coronavirus pneumonia, and whether more than two people in the household have respiratory symptoms. If so, you should go to a designated hospital in your area for relevant tests and finally confirm the diagnosis by nucleic acid testing, antibody assay and gene sequencing. Novel coronavirus infection cannot be diagnosed by simply having a cough all the time.