Thyroglobulin is usually referred to as thyroglobulin antibodies, and this indicator, if it reaches 245 IU/ml, is usually a more serious condition, which has exceeded the normal range, and it is recommended to consult a doctor. Thyroglobulin antibody, known as Tg-Ab in English, is a common autoantibody in the serum of patients with autoimmune thyroid disease. It is of clinical value in the regression and treatment of thyroiditis, especially Hashimoto’s thyroiditis. Concentrations of less than 60 IU/ml in the blood are normal. Serum Tg-Ab is a specific indicator for the diagnosis of thyroid autoimmune diseases, and is strongly positive in 80% to 90% of patients with chronic thyroiditis and 60% of patients with hyperthyroidism. If the thyroglobulin antibody 245IU/ml, the condition may continue to aggravate, must promptly consult the doctor for neck ultrasound or pathological examination to clarify the cause of the disease, need to pay attention to the diet and appropriate rest, if necessary, can follow the doctor’s instructions to take medication.