Reducing power,metal chelating ability and free radicals scavenging ability were selected as the three indicators of antioxidant capacity of polyphenols from Canarium album(Lour.).BHA and Vc were used as positive control.The results showed that the polyphenol extracts had strong antioxidant capacity.The ABTS and DPPH radical scavenging rates were higher than 99% and 95%,while the hydroxyl and superoxide anion radical scavenging rates were as high as 50%.The FRAP showed a TEAC of 1700μmol/L Trolox.In addition,the Fe2+ chelating rate was up to 14.9%.The ABTS,DPPH and hydroxyl radical scavenging ability and iron reducing power of extracts were stronger than BHA and Vc.The superoxide anion radical scavenging ability of extracts was weaker than Vc,but stronger than BHA.The crude extracts and purified extreacts showed no difference on ABTS,DPPH and hydroxyl radical scavenging ability,They all similar with iron reducing power.However,the difference on superoxide anion radical scavenging and iron chelating abilities were obvious.