Polysaccharide modification is a key research point in food science for a long time.In recent years,polysaccharide modification with bioactive chemicals (such as antioxidants) attracted much attention.This novel modification method not only improved physicochemical properties of polysaccharide substrate but also showed its new potential of new bioactivities.Modifying polysaccharide with antioxidant phenolic acids is one of those hot topics.On the basis of extensive literature investigation,the synthesis of polysaccharide-phenolic acid conjugates (biosynthesis and chemical synthesis),their physical and chemical properties (thermal stability,solubility,solution viscosity,crystallinity),biological activities (antioxidant activity,antibacterial properties,effects on metabolic enzymes) and applications are summarized.Furthermore,future perspectives involved in polysaccharide-phenolic acid conjugates are discussed.