Children with a strong dry cough at night, the common causes are physiological factors, cough variant asthma, gastroesophageal reflux disease. 1. Physiological factors: due to the child salivary gland secretion and the child’s swallowing function is not well developed, resulting in sleep saliva can not be swallowed in a timely manner, at this time it is easy to cause saliva choking, dry cough symptoms. 2. Cough variant asthma: usually closely related to genetic factors and environmental factors. Its main clinical manifestation is irritating dry cough, which is especially obvious at night and in the early morning. 3. Gastroesophageal reflux (GERD): usually caused by increased intra-abdominal pressure, decreased pressure in the lower esophageal sphincter, and decreased resistance of the esophageal mucosa, which leads to reflux of esophageal contents into the pharynx, resulting in a persistent dry cough at night. In conclusion, if your child has a strong dry cough at night, it is advisable to consult a doctor to find out the cause of the cough and treat it.