Pregnant women once hyperthyroidism high, after taking medication hyperthyroidism has been normalized, there is a need to continue to take medication. If the pregnant woman once hyperthyroidism high, after taking medication hyperthyroidism indicators have been normalized, it is also necessary to continue to take a period of time anti-thyroid drugs to avoid hyperthyroidism recurrence. The dose of anti-thyroid medication can be reduced under the guidance of a professional endocrinologist, such as the amount of medication in the original basis of halving, maintaining a smaller dose, to promote the recovery of pregnant women’s thyroid function. Therefore, pregnant women once high hyperthyroidism, after taking antithyroid drugs have returned to normal, still have to take the prescribed dose of drugs strictly according to the doctor’s instructions, not without authorization to stop the drug, so as to avoid the recurrence of hyperthyroidism. At the same time, in the daily diet of pregnant women, do not eat food containing high iodine, such as shrimp, nori, etc., should contain high-quality protein, calcium and vitamin-rich food. During the process of taking medication for hyperthyroidism, regular checkups should be conducted and timely medical attention should be sought if any discomfort occurs.