The first is the examination of thyroid function, including thyroxine, triiodothyronine, free T3, free T4, thyroglobulin antibody, thyroid peroxidase antibody, and thyroid receptor antibody. Second, the examination of the metabolic status of the body, including the examination of the metabolic rate of the body, including blood lipids and these routine tests. Thirdly, tests to assess the function of the thyroid pituitary gland, including iodine 131 uptake rate, thyroid suppression test, and ultrasensitive thyrotropin, etc. Fourth, the examination of goiter, including thyroid ultrasound. Fifth, including thyroid medication, to assess whether he has leukopenia and liver function impairment, that is, to check the blood routine and liver function of these tests.