Anti-Mullerian hormones are members of the transforming growth factor B (TGF-B) superfamily, a glycoprotein secreted by granular cells of anterior and small sinus follicles. The greater the number of antral follicles in the ovaries, the higher the concentration of AMH; Conversely, when follicles are gradually consumed with age and various factors, AMH concentration will also decrease, and when it is close to menopause, AMH will gradually tend to 0. May be used as a marker for predicting ovarian reserve.