The severity of hyperthyroidism and hypothyroidism cannot be compared, both may jeopardize the patient’s health, and active treatment is recommended. Hyperthyroidism refers to thyrotoxicosis caused by excessive production of thyroid hormones by the thyroid gland itself, which can cause agitation, palpitations, hyperphagia, fear of heat and other manifestations, and can also lead to thyroid crisis, thyrotoxic heart disease, anterior tibial mucous edema and other serious complications. Antithyroid drugs such as propylthiouracil, iodine 131, and surgery can be taken according to the condition. Hypothyroidism is a generalized low metabolic syndrome caused by hypothyroidism or thyroid hormone resistance. Appropriate levothyroxine tablets can be given as replacement therapy. Hyperthyroidism and hypothyroidism can be harmful if not treated in time, the severity of which cannot be compared, and should be consulted in time and treated under the guidance of a doctor.