咳嗽是一种反射性的防御动作,适度的咳嗽有利于清除呼吸道分泌物和有害因子,但频繁剧烈的咳嗽会对儿童的学习、生活和活动造成严重的影响,给患儿及其家庭带来很大苦恼。慢性咳嗽的病因复杂多样,伴随症状少,X线检查无异常,误诊 Cough is a kind of reflexive defensive action. Moderate cough is good for removing respiratory secretions and harmful factors. However, the frequent and severe cough can have a serious impact on children’s learning, living and activities, bringing children and their families Very distressed. The causes of chronic cough complex and diverse, with less symptoms, no abnormal X-ray examination, misdiagnosis