Taking the leave and petiole of red-colored，green-colored and secondary-colored Heracleum moellendorffii Hance as test material，this study measured the total phenols，total flavonoid content，antioxidant ability of different kinds and parts；and analyzed the correlation between functional activities and material composition contents．The result showed there were significant differences in total phenols and flavonoid content，and the total phenols and flavonoid content in leaves of above 3 kinds were significantly higher than that in their petioles．In the evaluation of antioxidant activity，the alcohol extracts of red leaf showed the highest antioxidant activity，followed by secondary-colored leaf，and that of the green-colored petiole was the weakest．The concentration of alcohol extracts exhibited linear relation with the scavenging ability of DPPH·free radicals，OH·free radicals and ABTS+ radicals．And there was positive correlation between the concentration of alcohol extracts and antioxidant ability．In conclusion，the antioxidant ability exhibited a significant or extreme significant positive relation with the total phenols content of leaf and petiole；and their correlation with total flavonoid content was non-significant．