In childhood, adenoid hypertrophy and atrophy is a normal physiological process, usually without special adverse consequences. Adenoids, also known as pharyngeal tonsils, are located in the midline of the posterior wall of the nasopharyngeal roof. Under normal physiological conditions, the adenoids develop to their maximum size at the age of 6-7 years, gradually shrink after the age of 10, and basically disappear in adults. If the adenoid hyperplasia and hypertrophy and cause corresponding symptoms is called adenoid hypertrophy, is a pathological phenomenon. It can cause suppurative otitis media, nasal symptoms such as nasal congestion, runny nose, open-mouth breathing and snoring during sleep. Prolonged nasal congestion and open-mouth breathing can cause facial developmental disorders, such as elongation of the maxilla, high arching of the hard palate, protruding upper incisors, and irregularities of the teeth, which is known as the adenoidal facies. Once diagnosed, adenoidectomy should be performed as soon as possible to improve symptoms and normalize development and nutritional status. If there is any discomfort or change in condition, you should go to the hospital in time, do not make blind judgment on your own and delay treatment.