Runny nose after fever is mainly a symptom of upper respiratory tract infection caused by bacterial or viral invasion, which stimulates the nasal mucosa causing edema and congestion of nasal mucosa. You can take anti-cold drugs such as cold and flu granules, aminophenol pseudo-masalamine tablets, and MeiYi pseudo-masaline capsules orally, which can treat various symptoms caused by common cold and influenza. Such as fever, headache, nasal congestion, runny nose, sneezing, muscle aches, sore throat, etc. You can also take Chinese medicine orally. For fever caused by wind-cold cold, you can use medicines such as Zheng Chai Hu Drinking Granules and Typhoid Granules to dispel wind and cold. If the fever is caused by wind-heat cold, you can use Blue Scutellaria Oral Liquid, Pudilan Anti-inflammatory Oral Liquid, Lianhua Qingfei Granules, Banlangen Granules, Qingkailing Granules, Antelope Horns Granules, etc. to clear the heat and detoxify the toxin. If the body temperature exceeds 38.5 degrees, you can use indomethacin suppositories in the anus, which can play a fast role in reducing fever.