The normal range of thyroid stimulating hormone is 0.35~5.5μIU/ml. Due to different examination methods and reagents, the reference indexes are different in different hospitals and need to be analyzed specifically. Thyrotropin is secreted by the pituitary gland and plays a key role in the functional control of the hypothalamic-pituitary-thyroid axis. Thyrotropin-releasing hormone from the hypothalamus stimulates the pituitary gland to produce thyrotropin, which stimulates the synthesis and secretion of thyroid hormones. Patients with abnormal thyroid-stimulating hormone levels should go to the hospital in time for treatment under the guidance of a doctor, pay attention to daily rest, avoid overwork, and pay attention to balanced nutrition.