If you do not take eugenol after total thyroid cancer excision, it will definitely lead to low thyroid function, weakness, mucinous edema and other symptoms, and even cause metastasis and recurrence of thyroid cancer. Because thyroid hormone cannot be synthesized and secreted after total thyroid cancer excision, the only way to supplement thyroid hormone is through exogenous thyroid hormone, and euthyroxine, as a slow-release thyroid hormone tablet, can supplement the thyroid hormone needed by the body after taking it. In the absence of thyroxine, the body suffers from weakness and mucinous edema. Thyroxine has a certain chemotherapeutic effect on thyroid cancer and can inhibit the metastasis and recurrence of tumors after thyroid surgery.