Composite macromolecular flocculants,having good flocculating activity,are composed of two or more different types of components in one polymeric matrix.The research progress of inorganic-inorganic composite macromolecular flocculants,inorganic-organic composite macromolecular flocculants,inorganic-natural composite macromolecular flocculants and inorganic-biopolymer composite macromolecular flocculants are reviewed in this paper.the development tendency of composite macromolecular flocculants is expected.