Indications for the use of antithyroid drugs are mild to moderate enlargement of the thyroid gland, mild disease, pregnancy or advanced age, such as unsuitable for surgical treatment, pre-surgical preparations, post-surgical recurrence of hyperthyroidism, and unsuitable for iodine 131 treatment and moderate to severe infiltrative proptosis patients. It is recommended to take medication under the supervision of a doctor. Antithyroid drugs may cause adverse reactions in patients such as granulocyte deficiency, toxic liver disease, rash, vasculitis and fetal malformations in pregnancy. Antithyroid drugs are contraindicated in patients who are allergic to antithyroid drugs, breastfeeding patients with hyperthyroidism, and patients with severe liver disease. Therefore, patients with hyperthyroidism who need to use antithyroid drugs should go to the hospital, take the drugs under the guidance of the doctor to reduce the incidence of adverse reactions, and if discomfort occurs after taking the drugs, they should also go to the hospital in a timely manner.