Pregnant women with hypothyroidism are not allowed to postpone the delivery test. Hypothyroidism in pregnant women means that the thyroid gland in the body cannot synthesize or secrete enough thyroxine to meet the needs of the body and allow the fetus to grow and develop normally. This may affect the development of fetal bones, which require thyroid hormones during development. Insufficient thyroid hormones will result in a shorter fetus after birth, and may also lead to neurointellectual developmental disorders in newborns. If hypothyroidism is detected during pregnancy through obstetrical examination, thyroid hormone supplementation, such as levothyroxine sodium tablets, should be performed under doctor’s guidance. Thyroid function should be rechecked every month during pregnancy, and drug dosage should be adjusted according to the thyroid function. Pregnant women with hypothyroidism is not recommended to postpone the maternity test, to do a good job of regular pregnancy maternity test, at any time to monitor the body of the pregnant woman, there are abnormalities in a timely manner.