After surgery, most people have to take medication for life, but whether to take medication needs to be decided according to the different sizes of the resected parts when thyroid cancer is operated, as follows: 1. More resected: when thyroid cancer is operated, it may carry out the total resection of the thyroid gland and the surrounding lymph node clearance, at this time, the surgery is more thorough, and the resected parts of the thyroid gland are also more, so the occurrence of hypothyroidism after surgery is more common. Therefore, hypothyroidism is more common after surgery, and most of them need to take thyroxine tablets for life to replenish and replace it. On the other hand, it is necessary to take thyroxine tablets to inhibit the level of TSH, so as to reduce the recurrence of thyroid cancer after surgery; 2. Less resection: if the patient does not have many resected parts after the thyroid cancer surgery, and a unilateral lobectomy or partial resection is carried out, this kind of patients also need to take medication after the surgery, but the specific medication to be taken should be determined according to the situation of the function of the thyroid gland as well as the level of TSH.