It is not uncommon for children to snore, but this is a type of disease caused by poor airflow during sleep, which in serious cases is medically known as sleep apnea hypoventilation syndrome. Snoring is caused by the narrowing or obstruction of the airway, resulting in poor airflow. If there is an abnormality in the central control of the nerves, these muscles in the throat relax and the tongue slips down and falls back, it will block the airway and cause snoring. Infants and children because of the imperfect development of the nervous system, especially premature infants this situation is more common. The second category is obstructive causes. Such as throat tumors, nasal obstruction due to rhinitis, enlarged turbinates, and enlarged tonsils or adenoids can lead to narrowing of the airway, with the most common cause of snoring in infants and children being enlarged tonsils or adenoids. The third category is mixed causes. It includes both of the above factors and causes snoring to appear. Therefore, there are many reasons for snoring caused by poor breathing during sleep, among which the most common cause of snoring in children is tonsil or adenoid hypertrophy, and more serious snoring can affect the growth and development of children, so it is necessary to consult a doctor in time to find out the cause of the disease and take corresponding treatment measures.