Thyroid stimulating hormone (TSH), free triiodothyronine (FT3), triiodothyronine (TT3), total thyroxine (TT3), free thyroxine (FT3) and other indicators in the eight items of thyroid are very important, and there is no such thing as which items are the most important, and it is necessary for the doctor to combine the indicators to comprehensively determine the function of the thyroid gland. The eight thyroid indicators include thyroid stimulating hormone (TSH), free triiodothyronine (FT3), triiodothyronine (TT3), total thyroxine (TT4), free thyroxine (FT4), antithyroglobulin antibody (TgAb), antithyroid peroxidase antibody (TPOAb), and antithyroid microsomal antibody (ATM). Among them, TSH, TT3, TT4, FT3 and FT4 are the main indicators for assessing thyroid function, which can be used to determine whether it is hyperthyroidism, hypothyroidism or normal thyroid function. TgAb, TPOAb, ATM can be used to determine the presence of autoimmune thyroiditis. Patients who need to undergo the 8-item thyroid test are advised to do so under the guidance of a doctor, and go to the hospital if there is any abnormality in the 8-item thyroid test.