Polycystic ovary syndrome(PCOS)is one of the most common reproductive and endocrine disorders in women of childbearing age,and the pathogenesis is unknown.Insulin resistance,hyperandrogenism and obesity are important pathophysiological basis.Glucose-dependent insulinotropic peptide(GIP)is a gastrointestinal hormone involved in the regulation of insulin secretion.Literature studies have shown that GIP is correlated with insulin resistance,hyperandrogenism,obesity and other characteristic changes of PCOS,and it may contribute to the onset and progression of PCOS by affecting the function of hypothalamic-pituitary-ovarian axis,suggesting that GIP is associated with PCOS.This paper reviews the research progress of the correlation between GIP and PCOS.