Abstract: The anthocyanins were extracted from four kinds of plants with ethanol.The antioxidant of anthocyanins was studied by the inhibition ability on DPPH and scavenging ability on hydroxyl radical.The relationship between the antioxi-dant and the phenol content was discussed.The results showed that the inhibition ability on DPPH:red bean>black rice> kidney bean>black bean,the scavenging ability on hydroxyl radical is as same as DPPH,and the higher phenol has the strongera ntioxidant.

Key words: anthocyanin, DPPH, hydroxyl radical, antioxidant capicity