After thyroidectomy, pregnancy is affected. This is because after thyroidectomy, low thyroid function may lead to ovulation disorders and can cause infertility. Therefore, after thyroidectomy, exogenous thyroid hormone supplementation is administered for treatment. For example, you can take Eugenol, Retis, etc., for supplemental treatment. Regular review is needed. After thyroidectomy, if you are pregnant, it will also affect the growth and development of the fetus and affect the neurointellectual development of the fetus. Therefore, after thyroidectomy, if you are pregnant, you should take oral medication for treatment. As long as you are pregnant, the value of thyroid stimulating hormone should not be too high or too low, and thyroid function should be checked once a month. According to the value of thyroid stimulating hormone in the blood, the dose of medication should be adjusted. As long as the thyroid function is controlled normally, it is perfectly possible to get pregnant and have a healthy baby.