Adenoids are physiologically enlarged at the age of 2~6 years old, and most of them will fade away on their own when they grow up. Adenoids are also called pharyngeal tonsils, children 2~6 years old adenoid hyperplasia is its physiological hypertrophy, most of them will gradually shrink after 10 years old, and basically disappeared when adults. If adenoid hyperplasia causes a series of clinical symptoms such as otitis media, sinusitis, sleep apnea, it is called adenoid hypertrophy. Adenoid hypertrophy can be treated conservatively by preventing colds, strengthening resistance, and actively treating primary diseases such as rhinitis and tonsillitis, and the symptoms may be relieved as the glands shrink with age. If conservative treatment is ineffective, accompanied by sleep apnea, recurrent sinusitis and otitis media, surgery is recommended.