When the patient T4, T3, TSH and other hyperthyroidism indicators close to normal can be based on the condition of the gradual reduction of the drug dosage, about 2 to 3 months, if the dosage is reduced after the symptoms and T3, T4 rebound, it is necessary to re-increase the dosage and maintain for a period of time. The exact time varies from person to person and needs to be under the guidance of a doctor. Hyperthyroidism is usually treated with antithyroxine drugs. When the symptoms of hyperthyroidism are significantly reduced, hypermetabolic symptoms disappear, body weight increases, and T4 and T3, especially TSH, are close to normal, the dosage of drugs can be gradually reduced according to the condition. In the process of reducing the dosage, every 2 to 4 weeks or so follow-up, each time to appropriately reduce the drug dose, should not reduce the dosage too quickly. The metabolic status of the patient as well as the TSH and T3 and T4 levels should be monitored at each follow-up visit to maintain normal and stable thyroid function as much as possible. The dose reduction should be adjusted according to the symptoms and laboratory results, and should take about 2 to 3 months. If symptoms and T3 and T4 rebound after dose reduction, the dose should be increased again and maintained for a period of time. It is recommended that patients with hyperthyroidism follow the doctor’s instructions, standardize the use of medication under the guidance of the doctor, and pay attention to regular rechecking of the thyroid function so that the doctor can adjust the dose of medication in a timely manner, and do not discontinue the medication on your own, so as to avoid delays in the condition and adverse consequences.