High thyroid stimulating hormone (TSH) after thyroidectomy is considered to be postoperative hypothyroidism or subclinical hypothyroidism, where the body’s thyroid cells are insufficient to store thyroxine and the body’s thyroxine cannot meet the body’s metabolic needs. Low thyroid function. During the postoperative period, thyroxine tablets should be routinely supplemented, thyroid function should be monitored, and the dosage of medication should be adjusted according to the results. During the treatment period, attention should be paid to nutrition, more high-protein foods, stay away from soy products and greasy foods, and seafood and iodine-containing foods can be supplemented appropriately. Regular thyroid color ultrasound examination, pay attention to rest and not to strain.