Abstract:Jujube is rich in nutrition and has many health functions.Polysaccharide is an important functional component of jujube.It is easy to be interfered by protein，pigment and other impurities in the process of polysaccharide purification and detection.Improving the purity of polysaccharide and reducing the loss rate of polysaccharide are the key steps in polysaccharide research.The paper summarized the extraction，isolation and purification methods of jujube polysaccharides，and analyzed the existing problems，in order to provide reference for the preparation，detection and functional evaluation of jujube polysaccharides and related food development.