The main causes of coughing in children after falling asleep at night include the following: first, due to bronchitis or bronchopneumonia. Children with bronchitis or bronchopneumonia, which are lower respiratory tract infections, can have very high phlegm levels. After falling asleep at night, the phlegm will irritate the child’s respiratory tract and cause coughing after falling asleep, so the child needs to be treated promptly with phlegm. Secondly, children with cough caused by accumulation of food, if there is indigestion, it will not only cause symptoms such as thick and greasy tongue and bad breath, but also cause children to have a violent cough after falling asleep at night, so you can promptly apply Wang’s Bao Chi Wan or Pediatric Cough Relief Oral Liquid.