As one of the important components in plants,polysaccharides is widely used because of its physiological activities.With the progresses in intensive study,more and more attention was given to the hydrolysis of polysaccharides and it was found that low molecular sugar has better activities than high molecular sugar in some ways.Reviews on the methods of polysaccharides hydrolysis and the structural identification were elaborated,providing basis for the relationship between hydrolysates and their physiological activities.
