Abstract: In the recent tens years,men attached great importance to the health function of antioxidants from natural plants such as grape(wine),tea leaf etc,and many scientists,nome and abroad,have unremittingly researched on molecule structure,function and purification methods of these native antioxidants.On the basis of previous workers’research and ourselves’test,authors summarized the correlation between antioxidative strength and molecule strcture of the native flavonoids and phenolicacids.Antioxidants with different molecule structure revealed apparently disparity of antioxidative strength in the presence of different mediums (lipid or liquid).

Key words: Flavonoids Phenolic acids Antioxidative strength Molecule structure