Adenoids, also called pharyngeal tonsils or proliferative bodies, are located at the top of the nasopharynx and the posterior wall of the pharynx, and belong to the lymphatic tissue, with an orange-flap-like surface. Adenoids, like tonsils, grow with age after birth, proliferate between the ages of 2 and 6, and gradually shrink after 10 years of age. Adenoid hypertrophy is the pathological proliferation of adenoids due to repeated stimulation of inflammation, thus causing nasal congestion, open-mouth breathing symptoms, especially at night, snoring, sleep disturbance, children often turn over from time to time, more obvious when lying on their backs, and in severe cases, apnea can occur. This disease is most common in children, often combined with chronic tonsillitis, tonsil hypertrophy. Sky drowsiness and learning difficulties are also common symptoms. The main hazards: 1. easy to form “adenoid face”, due to the children’s nasopharyngeal department is relatively small, when the adenoid hypertrophy, due to nasal congestion affects the breathing and rely on the mouth to open the mouth to breathe, long-term mouth breathing, the airflow impact on the hard palate will make the hard palate deformation, high arches, over time, the development of the face will be deformed, appearing on the upper lip, short thick warped, sagging jaw, nasal-labial groove disappearance, hard palate, the upper lip is short and thick, the jawbone, the nose and lip, the nose and lip, and the hard palate. Nasolabial groove disappears, high arch of hard palate, teeth are not neatly arranged, upper incisor protrudes, bad bite, nasal septum flattened, etc. Facial muscles are not easy to move, lack of expression, looks like a pig in a poke or an ugly duckling, which is medically known as “adenoid facial features”. 2. Easy to suffer from bronchitis, pediatric adenoid hypertrophy can cause nose blockage, resulting in children’s nasal discharge to the pharynx backflow, stimulate the mucous membrane of the lower respiratory tract, often caused by bursts of coughing, easy to suffer from bronchitis. 3. It is easy to cause children to be mentally unstable and unresponsive. Children with long-term mouth breathing, nose ventilation, easy to cause head ischemia, lack of oxygen, mental depression, headache, dizziness, memory loss, slow reaction and other phenomena. 4. Affecting children’s growth and development. As children’s development needs a lot of oxygen, and snoring will make the child in the sleep of a serious lack of oxygen, directly leading to the development of the brain oxygen supply is insufficient, caused by the growth hormone secretion is reduced, not only affects the child’s height, but also the body’s resistance to decline, but also will affect the child’s future intelligence. Therefore, these children are not only prone to respiratory infections, but also prone to chicken chest, funnel chest, and even induce pulmonary heart disease. Therefore, children’s snoring is more harmful than adults.