The thyroid gland will not recur after total thyroidectomy, because the gland has been cut, but after the operation, there is a problem of low thyroid function, so after the operation, thyroxine tablets should be given routinely for treatment, currently you can take oral eugenol, or levothyroxine tablets, which is less irritating to the gastrointestinal tract. Total thyroidectomy is suitable for hyperthyroidism or hyperthyroidism secondary to multiple nodular goiters. In addition, malignant tumors of the thyroid gland also require removal of the thyroid gland, as well as clearance of the cervical lymph nodes. During the postoperative period of thyroxine replacement therapy, color ultrasound of the neck or CT of the neck should be performed regularly, because some patients are prone to recurrence of malignant tumors after surgery, so close follow-up and observation are necessary.