Hyperthyroidism medication is divided into three phases: 1. Initial treatment phase: The initial dose of methimazole or propylthiouracil can be chosen according to the condition until the symptoms are relieved. During the maintenance period, thyroid function will be tested every 3-5 months, and the dose of thyroid medication will be adjusted according to the results to maintain the thyroid function in a completely normal state. It should be noted that granulocytopenia and liver damage caused by drug therapy occur mostly within 2-3 months after the initial drug administration, therefore, after every 1-2 weeks during the initial treatment period, it is necessary to recheck blood count and liver function every 2-4 weeks, and pay attention to drug-induced drug rash, etc. If granulocytopenia, liver damage or drug rash occur after taking the drug, it is necessary to return to the hospital in time.