Allergic rhinitis caused by chronic cough has been phlegm, pay attention to timely avoid allergens, but also the use of anti-allergy drugs. 1. Avoid contact with allergens: if allergic rhinitis patients encounter willow floss or chemicals and other substances, will cause serious stimulation of the nasal cavity, resulting in nasal congestion and edema and other manifestations of the nasal cavity, the nasal mucus can be through the nasal hairs and villi to the throat, triggered by a chronic cough with phlegm, so in the onset of the disease need to avoid the allergens, aggravate the care of the nose, pay more attention to their own hygiene. 2. medication: if allergic rhinitis patients with increased secretion of histamine, will stimulate the throat, and then trigger cough and phlegm and other manifestations, this situation should be used in anti-allergy drug therapy, nasal glucocorticoid nasal spray, antihistamine drugs, such as loratadine tablets. At the same time, the nasal cavity can be rinsed with saline. Allergic rhinitis caused by chronic cough has been phlegm need to go to the hospital as soon as possible to clarify the cause of the disease, under the guidance of the doctor targeted treatment.