Old runny nose consider upper respiratory tract infection or allergic rhinitis may, according to the cause of the cause, symptomatic treatment, is the most effective method. Upper respiratory tract infection is a viral or bacterial infection of the nasal cavity, pharyngeal mucosa, causing inflammation, inflammation stimulation of the mucosa, nasal mucosal congestion, can cause a runny nose, sneezing and other symptoms, symptoms are light, you can drink more water, pay attention to warmth, with the use of pseudoephedrine, to reduce the congestion of the nose symptomatic treatment; the more serious can be the use of antiviral (oseltamivir), anti-infective drugs (amoxicillin) treatment. Allergic rhinitis is in contact with allergens, nasal mucosa inflammatory reaction, manifested as nasal itching, runny nose, sneezing, it is recommended to avoid contact with allergens, with the use of antihistamines, such as loratadine anti-allergy treatment, or the use of nasal glucocorticosteroids (budesonide), to reduce the inflammation of the nasal mucosa. Old runny nose, the etiology is more, it is recommended to seek timely medical treatment, drug treatment needs to be standardized under the guidance of a professional doctor to use medication.