Runny nose is one of the symptoms of novel coronavirus infection, but this symptom is not characteristic and is basically the same as other common colds and influenza that cause runny nose, so it has no diagnostic significance. The diagnosis of novel coronavirus must rely on the results of pathogenic testing, due to the current large number of patients and the shortage of kits around the world, if there is only a slight runny nose in suspected patients, it is recommended to first isolate yourself at home, if the symptoms gradually improve, it means that there is no virus infection. If the symptoms continue to worsen during the follow-up period, and fever, dry cough, fatigue and breathing difficulties appear, you should promptly visit the fever clinics of regular hospitals around the world and undergo pathogenic testing to determine whether you are infected.