Hypothyroidism is also known as hypothyroidism. Different causes of hypothyroidism lead to different treatments, and in addition to general treatments, treatments need to be based on the cause of the disease. 1. General treatment: Hypothyroidism may cause constipation and elevated blood fat, so a low-fat, high-fiber diet should be adopted, avoiding fatty meats and fried foods. 2. Etiological treatment: autoimmune thyroiditis, thyroidectomy, radioactive iodine treatment can cause destruction of the thyroid gland, resulting in hypothyroidism, which usually requires lifelong levothyroxine sodium tablets as replacement therapy. As pituitary tumors can lead to a decrease in thyroid-stimulating hormone, which in turn leads to a decrease in the level of thyroid hormone, thus leading to hypothyroidism, at this time it is necessary to treat the primary disease first, and then apply levothyroxine sodium tablets according to the condition. As hypothyroidism may occur during the treatment of hyperthyroidism by applying antithyroid drugs such as methimazole and propylthiouracil in too large a dose, it is necessary to stop or reduce the use of antithyroid drugs and monitor the thyroid function. When hypothyroidism occurs, it is necessary to consult the doctor in time, complete the relevant examinations, clarify the specific causes, and follow the doctor’s instructions for treatment.