Adenoids, also called pharyngeal tonsils or proliferators, are lymphatic tissues in the posterior part of the nasopharyngeal apex, similar to the tonsils in the mouth, which are hidden in the posterior part of the nasal cavity and located at the junction of the nasopharyngeal apex and posterior wall, shaped like half a peeled orange, with an uneven surface and 5-6 longitudinal furrows, which are prone to retain bacteria. The adenoids are present after birth and are largest at the age of 6-7 years, and generally begin to shrink after the age of 10 years. When the resistance of the child’s body is lowered, such as cold and flu, the viruses and bacteria present in the body multiply, and outside pathogens take advantage of the situation, the child is then prone to acute adenoids, manifested by sudden onset of fever, body temperature up to 40 degrees Celsius, nasal congestion, breathing difficulties, and if the inflammation reaches the pharyngeal orifice of the eustachian tube can If the inflammation spreads to the pharyngeal orifice of the eustachian tube, it can cause purulent otitis media, which is characterized by stuffiness in the ear, ear pain, and hearing loss. Patients with acute adenoiditis should rest in bed and can be treated symptomatically: local medication can be used to relieve nasal congestion, and antibiotics should be used to prevent infection in severe cases. Acute adenoiditis is not a serious health risk for children, but if the adenoids become pathologically hyperplastic and enlarged due to repeated stimulation of inflammation, it can affect the growth and development of children. The following aspects: 1, facial development: children’s nasopharynx is relatively small, when adenoid hypertrophy, due to nasal congestion affect breathing and mouth open breathing, long-term mouth breathing, airflow impact on the hard palate will make the hard palate deformation, high arch, over time, facial development will be deformed, the upper lip short thick cocked, lower jaw sagging, nasolabial fissure disappeared, hard palate high arch, teeth alignment is not neat, upper incisors protrude, poor bite, nasal septum, nasal septum, nasal septum. The facial muscles are not easy to move, lack of expression, and look like a piggyback or ugly duckling, which is medically called “adenoid face”. 2, affect the nasal drainage: due to adenoid hypertrophy, prone to sinusitis, the child’s nasal snot backflow to the pharynx, stimulating the lower respiratory tract mucosa, can cause cough. 3, lack of oxygen affects development: children with long-term breathing through the mouth, the nose is not ventilated, easy to cause head ischemia, lack of oxygen, mental depression, headache, dizziness, memory loss, slow reaction and other phenomena. The proliferation of proliferators makes the passage of airflow in the respiratory tract narrow and unobstructed, and the gas strikes the root of the tongue and the hanging congestion and other tissues from time to time during sleep, resulting in a burst of snoring with breathing. As children need sufficient oxygen for development, snoring will make children lack oxygen during sleep, which will lead to insufficient oxygen supply for brain development and reduce secretion of growth hormone, which will not only affect children’s height, but also reduce body resistance and affect children’s intelligence in the future. Long-term lack of oxygen may also cause eye abnormalities in children. 4, respiratory effort caused by abnormal chest development: long-term respiratory effort, can cause chest development deformities, sternal depression, the formation of chicken chest, funnel chest, and even induce pulmonary heart disease. Therefore, these children are not only prone to respiratory infections, but also prone to chicken chest, funnel chest, and even induced pulmonary heart disease, long-term respiratory obstruction leads to poor lung expansion, poor pulmonary ventilation, easily caused by increased pulmonary artery pressure. 5, obstruction of the eustachian tube caused by otitis media.