With the development of modern lifestyle and alteration of eating habits,the core of disease spectrum has gradually turned into chronic non-infectious diseases. Cardiovascular disease,lipid metabolism disorders,obesity,metabolic syndrome,polycystic ovary syndrome are associated with insulin resistance in recent studies. Insulin resistance is an important part of chronic non-infectious dis-eases,which will seriously influence the quality of life. Zinc-α2-glycoprotein(ZAG) is a newly discovered adipocytokine. Because of its important role of weight controlling and insulin sensitivity improving,lots of clinical studies have been performed to prove the as-sociation between ZAG and insulin resistance diseases in recent years.