Adenoid hypertrophy may heal on its own, and in preschool children, the adenoids may be very active. However, from the age of 10, the adenoids will gradually shrink, so some children can recover on their own, but it takes a long time. Adenoids are present in the nasopharynx of normal-born infants and increase in size as they age, usually to their maximum size by age six, then slowly shrink to a smaller size. Most adenoids are caused by recurrent viral or bacterial infections, proliferation of lymphoid tissue, and obesity. As children’s immune system and endocrine system are not fully developed, the immunity of the body is poor, and they are often invaded by germs, and the respiratory tract is a weak area, while the adenoids are a relatively large lymphatic immune tissue in the respiratory tract, which is prone to repeated inflammatory reactions, leading to hyperplasia. When adenoid hypertrophy occurs, if left untreated, it is easy to develop complications in the ear and nose, and can affect the growth and development of the affected child for a long time, which is detrimental to the health of the child. Therefore, timely treatment is needed.