Taking hyperthyroid medication for pregnancy can suspend antithyroid medication under doctor’s supervision, and immediately test thyroid function and thyroid autoantibodies. According to the clinical manifestations and free thyroxine level to decide whether to use the drug. In some patients, the symptoms of hyperthyroidism worsened after stopping the medication, and the free thyroxine or total thyroxine and triiodothyronine increased significantly, it is recommended to continue the application of antithyroid medication, with propylthiouracil preferred in the early stage of pregnancy, and methimazole as the second-line choice. 1. Adjustment of medication:Antithyroid drugs can cause fetal skin dysplasia, fetal malformations, etc. If possible, it is best not to take antithyroid drugs during pregnancy and before pregnancy. If you do need antithyroid medication during pregnancy, propylthiouracil is preferred, and it is recommended that you take the medication under a doctor’s supervision. 2. Dietary adjustments: Pregnant patients with hyperthyroidism should have a low iodine diet, with no additional iodine supplementation or strict iodine restriction, because the fetus needs iodine from the mother to synthesize thyroid hormones. 3. Termination of pregnancy: If the patient’s hyperthyroidism is serious, the need for large doses of antithyroid drugs can not control the control of the disease, or complications, such as drugs on the mother to produce liver damage, the impact on the fetus has a tendency to abortion, should be terminated. Eat hyperthyroidism medication pregnant to the hospital in a timely manner, under the guidance of the doctor treatment.