ABTS and DPPH methods had the same mechanism reaction that was electron transfer assays [18], but the results of the present study showed that ABTS scavenging capacity not always linear with DPPH scavenging activity. The Pearson’s correlation coefficient of various leaves extracts of four varieties mangoes indicated that there were positively and high correlation between ABTS activities and DPPH capacities. It could be seen that antioxidant activities various mangoes leaves extracts in ABTS assays were linear with DPPH assays.