Currently there are two main oral medications for the treatment of hyperthyroidism, namely methimazole and propylthiouracil, taking the medication will not necessarily be completely eradicated, there is a possibility of relapse. The mechanism of action of methimazole and propylthiouracil in the treatment of hyperthyroidism is to inhibit the synthesis of thyroid hormones to control the symptoms of hyperthyroidism. Oral medications for hyperthyroidism are relatively slow and the treatment course is long, usually taking about 1.5 to 2 years, and some patients even need longer treatment. Side effects of drugs for hyperthyroidism mainly include leukopenia, liver function impairment, allergic reactions and so on. Patients should undergo regular blood tests and liver function tests. Once the drug-related side effects occur, it is necessary to stop the drug in time to avoid the occurrence of granulocytopenia, liver failure, exfoliative dermatitis and other serious conditions. The treatment of hyperthyroidism should be carried out under the guidance of professional physicians and regular checkups, in order to be cured as soon as possible.