Pregnant women with hypothyroidism and high thyrotropin need to be treated with medication under the supervision of a doctor. Hypothyroidism, or hypothyroidism, is a combination of hypothyroidism when an obstetric test during pregnancy indicates elevated thyrotropin. Since hypothyroidism increases the risk of miscarriage, fetal malformation, congenital defects, mental retardation, and preeclampsia, it is necessary to take levothyroxine as prescribed by the doctor after the diagnosis has been made, and to check the thyroxine regularly to guide the adjustment of the dosage. Pregnant women with hypothyroidism should strengthen the nutrition during pregnancy and monitor the intrauterine development of the fetus during pregnancy. Fetal heart rate monitoring should also be strengthened during labor to detect fetal distress in a timely manner. Thyroid function tests should be performed after the birth of the newborn to detect neonatal hypothyroidism and provide timely intervention. Pregnant women with hypothyroidism need to follow the doctor’s instructions to actively treat, and regular review.