Runny nose may be related to acute rhinitis, allergic rhinitis and physical and chemical factors stimulation and other factors, often according to the specific cause of the targeted medication, cleaning the nasal cavity, away from allergens and other ways of treatment. 1. Acute rhinitis: acute rhinitis caused by viral or bacterial infection, stimulation of the nasal mucosa to increase secretion increases, can be used locally budesonide nasal spray, or take eucalyptus pinellia enteric soft capsule to reduce secretion. 2. Allergic rhinitis: a runny nose may be caused by inhaling gas or pollen, eating some kind of food allergy, you need to stay away from allergens, you can take oral loratadine and other drugs to fight allergies. 3. Physical and chemical factors stimulation: runny nose may be caused by a variety of strong pungent particles, dust, odor, etc., need to keep the room clean, dry, to the dust-filled environment can wear a mask, can also be used to wash the nasal cavity with saline. Cure for runny nose should be combined with the cause to determine, it is recommended that patients with recurrent and frequent runny nose or persistent unrelieved, actively go to the regular hospital for a clear diagnosis, the use of medication needs to be guided by a doctor.