Usually adenoids begin to atrophy after the age of 10 years until they largely disappear in adulthood. Before that, children are prone to pathological adenoid hypertrophy, mostly related to inflammation. The adenoids are located in the nasopharynx and normally begin to atrophy after the age of 10 years until they largely disappear in adulthood. Secondly, when children are 2-6 years old, the adenoids will have a short period of physiological hypertrophy due to their exuberant growth, which is a normal phenomenon and no need to worry too much. However, some children will have pathological adenoid hypertrophy during this period, which is mainly related to the repeated inflammatory stimulation of adenoids, or the inflammation of the nasal cavity, sinuses, tonsils and other neighboring areas spread to the nasopharynx, which stimulates the adenoids to undergo pathological hyperplasia. In summary, if the child’s adenoids did not atrophy within the normal time, and there is discomfort, it is recommended to go to the hospital in time, to clarify the cause of the disease, standardized treatment.