A runny nose should be treated accordingly depending on the cause. Common causes include colds, chronic rhinitis, allergic rhinitis and so on. Commonly used treatment methods such as general treatment and medication. 1. Colds: Take proper rest, eat a light diet, and quit smoking and drinking. Common cold does not require antiviral drugs and is mostly self-limiting. For influenza, antiviral drugs such as oseltamivir, decongestants such as pseudoephedrine hydrochloride and antihistamines such as chlorpheniramine maleate can be used. When accompanied by fever, antipyretic and analgesic drugs such as acetaminophen can be used. 2. Vasomotor rhinitis: environmental factors such as temperature, air pressure, irritating gases can stimulate nasal symptoms. Nasal congestion, runny nose, sneezing, itchy nose and so on are more common, there are also to a certain kind of symptom is mainly, for example, runny nose. Commonly used drugs such as corticosteroids such as budesonide nasal spray and other local medications. 3. Allergic rhinitis: avoid contact with allergens such as pollen and dust mites. Commonly used drugs such as antihistamines such as loratadine, etc.; glucocorticosteroids such as budesonide nasal spray, etc.; nasal decongestants such as ephedrine, etc.; anticholinergics such as ipratropium bromide, etc.; leukotriene receptor antagonists such as montelukast, etc.. Specific immunotherapy may reduce symptoms. Surgery may be indicated if accompanied by hyperplasia and hypertrophy of the inferior turbinate. There may be other reasons for the non-stop flow of nasal mucus, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to actively standardize the treatment.