Abstract: Konjac glucomannan ( KGM) and starch are resourceful macromolecular polysaccharide. They are widely used in the fields of food, pharmaceutical, and biological.KGM and starch composite can significantly improve the properties of each other and expand the range of its applications. Currently, there is little systematic elaboration about the composite modification of KGM and starch. In this paper, the physical, chemical and biological modification methods of KGM / starch composite were reviewed and the prospects were discussed. This review is expected to exploit these resources better and provide references for the modification of other macromolecules polysaccharide composite.