If the thyroid function of a pregnant woman is only high in TSH and the rest is normal, it is considered that hypothyroidism in pregnancy, subclinical hypothyroidism in pregnancy, selective pituitary thyroid hormone resistance syndrome, etc., and general treatment and medication should be taken according to the cause of the disease. 1. Hypothyroidism in pregnancy: If it is caused by iodine deficiency, appropriate iodine supplementation is needed, and levothyroid hormone supplementation is required. 2. Subclinical hypothyroidism in pregnancy: If it is mild subclinical hypothyroidism and the symptoms are not obvious, it is recommended to monitor the thyroid stimulating hormone regularly. Severe subclinical hypothyroidism is recommended to be treated with levothyroxine sodium instead. 3. Selective pituitary thyroid hormone resistance syndrome: that is, thyroid hormone inappropriateness, oral thyroxine can be taken, such as levothyroxine sodium. After delivery, adrenocorticotropic hormones, such as dexamethasone and hydrocortisone, should be taken consistently. If only high TSH is detected at present and the rest is normal, it is recommended to review the thyroid function regularly and then target treatment according to the diagnosis. Regarding the use of medication during pregnancy, it should be carried out under the guidance of professional physicians.