Proliferative gland hypertrophy is the enlargement or inflammation of the proliferative gland. The gland is a normal tissue located behind the nasal cavity and is a lymphatic tissue in the pharynx, like the palatine tonsil tissue behind the mouth. It begins to grow actively after birth and reaches its maximum size at the age of 3 to 7 years as the child’s body continues to grow and develop. During childhood, it receives antigenic stimulation from external pathogens to produce antibodies and secrete immunoglobulins in order to adapt to the needs of the body’s defense and immune function, enhancing the child’s own immune defense ability. As children grow older, their immune function is gradually improved and perfected, and gradually atrophies and degenerates naturally at the age of about 10. Because of the weak resistance of children’s organism, they are prone to colds. If you repeatedly catch a cold, the pharyngeal gland is often inflamed, and repeatedly, the gland is unable to resist the attack of foreign pathogenic microorganisms, and as a result, it becomes a place where pathogens exist and inflammation occurs in the gland. In normal children, there are many kinds of bacteria in the adenoids, but they do not usually develop. When the temperature changes, children’s malnutrition, body resistance, cold stimulation caused by upper respiratory tract infections, acute infectious diseases, acute adenoiditis, can make adenoids hypertrophy. Chronic rhinitis, sinusitis, nasal secretions backflow stimulation adenoid hypertrophy, and adenoid hypertrophy impede the ventilation and drainage of the nasal cavity and sinuses, rhinitis or sinusitis is not easy to cure, the two are causal, vicious circle; air pollution, metabolic reactions can also make adenoid hypertrophy.