Abstract: Many kinds of active substances in mulberry syncarp, such as polysaccharide、 minor element、 amino acid、vitamin、 mineral element、 flavones, play an important role in the organism, especially their application in the fields of medical field and health food, they have unique biological activation to such respects as the tumor , virus , cardiovascular vessel ,etc., and have very low cellular toxicity. polysaccharide、amino acid、vitamin、mineral element were extracted and analysed in this study. contained 10.99 % polysaccharide、14 kinds of amino acid、 Ca、 Fe、 Zn、 K、 Mg and VB1、VB2、VB3、VC in the mulberry syncarp.