The soybcan isoflavone exists in soybean seeds,the scientfic circles pay close attention to the soybean isoflavone because it plays an important role in peoples health. the important scientific publication scientific news worldly took the mark of soybean isoflavone as its cover,introducing function of the products of soybean isoflavone in 1998. clinical research shows that the soybean isoflavon has special curative effects to breast cancer, prostate cacer, heart disease, heart vesel disease and to women climacteric syndrome