Enlarged tonsils may be caused by cancer, physiological hypertrophy or acute tonsillitis. 1. Cancer: if there is no pain in enlarged tonsils, it may be tonsil cancer. Small tonsil cancer can be asymptomatic, and the enlargement of tumor can cause pharyngeal discomfort, pharyngeal foreign body sensation, pharyngeal pain, hearing loss, cervical lymph node enlargement and other manifestations. 2. Physiological tonsil hypertrophy: in the age of tonsil development, part of the population simply have enlarged tonsils, i.e. physiological hypertrophy, which is a normal phenomenon, and if there are no other discomforts, generally do not need special treatment. 3. Acute tonsillitis: enlarged tonsils may be caused by acute tonsillitis, acute tonsillitis is a non-specific acute inflammation of the palatine tonsils, is a common pharyngeal disease. Patients will also be accompanied by chills, high fever and other symptoms, will not only invade the adjacent tissues, serious cases will also involve the joints, kidneys, cardiovascular and other systemic functions. Enlarged tonsils are not necessarily cancer, it is recommended that patients with enlarged tonsils go to the hospital in a timely manner to clarify the cause of the disease under the guidance of the doctor reasonable treatment, to avoid delays in the condition caused by adverse consequences.