Hyperthyroidism is hyperthyroidism, which is a disease caused by abnormal thyroid function, also known as thyrotoxicosis. It refers to a group of endocrine diseases caused by excessive synthesis and secretion of thyroid hormone or high concentration of thyroid hormone in blood circulation for some reasons, and belongs to autoimmune diseases. Hyperthyroidism is a hypermetabolic syndrome. Its clinical manifestations are overeating, emaciation, fear of heat, hyperhidrosis, excitement, insomnia, fatigue, diarrhea and other symptoms. Patients may have exophthalmos, goiter, and even affect the liver and destroy the blood system. Hyperthyroidism usually has adverse complications and needs timely treatment. Hyperthyroidism can be treated by drugs, iodine and surgery, and corresponding treatment measures need to be selected according to the severity of hyperthyroidism.