Hepatitis B patients can do iodine 131 treatment of hyperthyroidism, simple hepatitis B disease is not a contraindication to iodine 131 treatment of hyperthyroidism. Hepatitis B destroys human liver cells, generally does not affect the thyroid cells and thyroid cells hormone secretion function, so simple hepatitis B disease is not a contraindication to iodine 131 treatment of hyperthyroidism, hepatitis B patients can do iodine 131 treatment of hyperthyroidism under the guidance of a doctor. Absolute contraindications to radioactive iodine 131 treatment of hyperthyroidism are pregnancy, breastfeeding women and adolescents younger than 18 years of age, because iodine 131 may affect the development of the fetus and the growth and development of adolescents younger than 18 years of age. Temporary contraindications are patients who have recently developed severe cardiac insufficiency, heart failure, and severe proptosis.