1. Pregnant women with hyperthyroidism should be examined and followed up in high-risk clinics, pay attention to the intrauterine growth rate of the fetus, and actively control hyperemesis. 2. Mild hyperthyroidism: mild hyperthyroidism can be tolerated during pregnancy, and anti-thyroid medication is generally not needed because anti-thyroid medication can affect fetal thyroid function through the placenta. 3. Pregnant women with severe hyperthyroidism: anti-thyroid medication is required. The dose of antithyroid drugs should not be too high in the middle and late stages of pregnancy, and generally the upper limit of normal maternal blood FT4 level should be maintained. Among the anti-thyroid drugs, propylthiouracil is less suitable than tabazol to affect the fetus through the placenta, and the class blocks the conversion of T4 into effective T3 in the surrounding tissues, causing the serum T3 level to drop rapidly, so propylthiouracil is recommended during pregnancy. 4. It is not recommended to take thyroid hormone at the same time during pregnancy. Thyroid hormone is not easy to pass through the placenta, and the dose of anti-thyroid drugs is increased after using it instead. 5, do not advocate the use of beta-blocker insulin (propranolol). The drug is associated with spontaneous abortion. The heart can relieve the systemic symptoms caused by excessive thyroid hormone. Long-term application can increase the muscle tone of the uterus, leading to placental dysplasia, as well as intrauterine growth retardation of the fetus.