Enlarged tonsils may be physiological hypertrophy, or may be due to acute tonsillitis enlargement or chronic tonsillitis. 1. Physiological hypertrophy: 1 to 4-year-old children, belonging to the age of tonsil enlargement, most of the children are simply enlarged tonsils, that is, physiological hypertrophy, is a normal phenomenon. As long as the child does not have a fever, the throat does not hurt, the tonsils are not congested and purulent secretions, do not need to be treated. 2. Acute tonsillitis: In acute tonsillitis caused by bacterial and viral infections, tonsillar tissue edema and congestion occur because of the release of inflammatory factors and infiltration of inflammatory cells, and a large number of metabolism, shedding materials and cellular components accumulate in the crypt. 3. Chronic tonsillitis: the etiology of chronic tonsillitis is related to recurrent infections, low immunity, inflammation of neighboring tissues, special infections and other factors. It is manifested as the persistent and progressive hyperplasia and hypertrophy of tonsils, and such hyperplasia will not subside on its own. There are many reasons for the enlargement of the tonsils, but also need to be alert to the tumor, it is recommended that patients go to the hospital for a clear diagnosis, under the guidance of the doctor to take relevant therapeutic measures.