Children cough at night may be caused by disease factors, such as asthma, pneumonia, rhinitis, gastroesophageal reflux. 1. Asthma: a chronic inflammatory response of the respiratory tract, generally affected by hereditary factors, the symptoms of chronic coughing, due to the child’s night vagus nerve excitation, stimulating asthma attacks, resulting in children coughing at night. 2. Pneumonia: the vagus nerve is excited at night, the innervated respiratory tract reactivity increases, resulting in children coughing at night, which may be accompanied by dyspnea, coughing and phlegm symptoms. 3. Rhinitis: Postnasal drip due to inflammation of the nose, accompanied by an increase in runny nose and nasal itching. 4. Gastroesophageal reflux (GERD): due to lesions in the lower esophageal sphincter, irritation of the bronchial tubes, resulting in a dry cough, chest pain, bloating and other symptoms. It is recommended to avoid sleeping at night when the temperature is too low, the symptoms of persistent cough promptly to the hospital, the relevant examination, to clarify the cause.