Snoring in children is a disease, which is called “snoring” in medical science. Children snore in bed because of the obstruction of the airway, such as enlarged tonsils, hyperplastic adenoids, incorrect body position, etc., causing local narrowing of the airway, causing the vibration of the airflow and causing snoring. Children snoring in bed should first find the cause of snoring, and then treat the cause symptomatically. 1, airway obstruction: obstruction in any part of the airway from the front to the opening of the nasal cavity and from the bottom to the opening of the trachea can cause poor airflow and lead to snoring in children. Common causes include adenoid hypertrophy, tonsil hypertrophy, chronic rhinitis, sinusitis and even airway occupancy, among which adenoid hypertrophy and tonsil hypertrophy are the most common causes of snoring in children. (1) Adenoid hypertrophy: The adenoids are located in a larger lymphatic tissue at the top and back of the nasopharyngeal cavity and proliferate most vigorously at the age of 3 to 6 years. Normal proliferation has no effect on children, but if the adenoids are too enlarged and block the posterior nostrils, the air entering and leaving the nasal cavity is obstructed. After children fall asleep, the gas exhaled from the trachea is forced out of the mouth, and from time to time the gas impinges on the tongue root and other tissues, making a grunting sound. If adenoid hypertrophy causes children to have trouble sleeping and snoring at night, it is recommended to go to the ENT department for examination, either by rhinoscopy or CT examination of the lateral nasopharynx and nasopharynx. If the pressure on the airway is more than 2/3, it should be treated surgically, otherwise it will affect the normal growth and development of the child. (2) Tonsil hypertrophy: Normally, the tonsils, which grow on both sides of the pharynx, have the function of defense and resistance to invasion by external germs. However, some children’s tonsils are too large, so that the tonsils on both sides almost touch each other, blocking the pharyngeal cavity, resulting in poor breathing, and because the gas exhaled from the lungs and trachea cannot be exhaled smoothly from the nasal cavity, they will open their mouths to breathe and snore during sleep. (3) Snoring caused by rhinitis: Adenoid hypertrophy caused by long-term chronic rhinitis stimulation or sinusitis, normally the adenoids are the largest at the age of six and will shrink after the age of ten, if the adenoid hypertrophy is not relieved continuously, it will cause snoring, and long-term hypertrophy needs active treatment. 2. Central regulatory abnormalities: respiratory regulatory abnormalities induced by various reasons can lead to abnormal respiratory rhythm and movement during sleep, thus leading to the syndrome. 3.Special causes: such as obesity, endocrine diseases, genetic metabolic diseases, etc. can trigger snoring in children. The soft tissues in the pharynx of obese children are thicker, and there are excessive fat deposits in the soft palate, uvula and pharyngeal wall. When sleeping, the local loose tissue will easily compress the airway and cause snoring due to the obstacle of airflow.