Snoring, also called snoring and snoring, is very common in life, but it is also a disease. The direct cause of snoring is airway narrowing or obstruction causing poor airflow, and the causes of airway narrowing or obstruction are mainly the following three categories: The first category, obstructive causes. It is caused by the narrowing of airway in nose, throat and pharynx, such as nasal obstruction caused by rhinitis, enlargement of tonsils or adenoids, enlargement of turbinates, tumor of throat, etc., which can lead to narrowing of airway, among which the most common cause of snoring in infants and children is enlargement of tonsils or adenoids. The second category, central causes. Breathing and heartbeat are controlled by the nerve center, and if there is an abnormality in the control of the nerve center, causing the muscles in the throat to relax during sleep, the tongue to slide down or fall back, it will block the airway and snoring will occur. Infants and children, especially premature babies, are more common because of the imperfect development of the nervous system. Patients with the sequelae of stroke, who did not snore before and started to snore after they became ill, are also mostly due to this reason. The third category, mixed causes. It includes both of the above factors causing snoring. Therefore, there are many reasons that can cause snoring in sleep, and more serious snoring can cause hyperventilation and lack of oxygen in the body, and symptoms such as dizziness and brain rise can occur, and the onset of children can affect the growth and development, so timely consultation is needed to clarify the cause of the disease and take appropriate treatment measures.