There are three main treatments for hyperthyroidism: internal antithyroid medication, 131I therapy, and surgical treatment. Internal antithyroid drug therapy: The dose needs to be adjusted in time during the treatment, and hypothyroidism is not likely to occur. However, the course of treatment is long, about 1.5-2 years, and hyperthyroidism is prone to relapse when treatment is stopped or reduced, with a relapse rate of about 50%. The drug may cause damage to liver function, hematopoietic system and nephritis. (Methimazole is the drug of choice.) Treatment: easy to use, high success rate (about 85% cured within six months), low cost. It does not cause allergic reactions and does not cause other damage to liver function and hematopoietic system. However, lifelong thyroid hormone replacement therapy is required after conversion to hypothyroidism. Surgical treatment: fast efficacy, but has certain risks and must be performed when hyperthyroidism is under control. After surgery some patients have a recurrence of hyperthyroidism or develop hypothyroidism.