Children coughing with croup at night, mostly due to bronchial asthma, is a chronic inflammation of the airways triggered by risk factors. Bronchial asthma, referred to as asthma, can be associated with a variety of factors such as neurological, immunological, psychiatric, endocrine, genetic, etc. It is triggered by risk factors such as inhalation or ingestion of allergens, respiratory infections, emotional changes, cold air irritation, and medications. Due to chronic inflammation of the airway, its reactivity increases and reversible airflow limitation occurs, thus causing recurrent episodes of cough, chest tightness, shortness of breath and wheezing. Children tend to have episodes or exacerbations at night and in the early morning, and cough and wheezing present as paroxysmal episodes of dyspnea accompanied by rales during the episodes. Children coughing at night with croup, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.