The cause of runny nose after fever in children is mainly due to the symptoms caused by cold. Because when children have a cold, especially influenza, they have high fever, muscle aches, headache, sore throat and other symptoms in the early stage of the disease, and the symptoms of stuffy nose and runny nose are not very obvious at this time. When the fever subsides after 2-3 days, the symptoms of nasal congestion and runny nose will gradually appear, and some children even have coughing symptoms, which is due to a gradual process of the disease. If a child has a runny nose after a fever, he or she can drink more water and take anti-viral Chinese medicine, such as Blue Scutellaria Oral Liquid, in time.