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In this study, we analyzed the antioxidant activity against juice and ethanol extracts of succulent plants such as Pachyphytum Dr. cornelius and Echeveria laurinze. The EC50 of DPPH scavenging radical activity at 5×10-4 M DPPH was 0.03 mg/mL for ascorbic acid as a representative chemical antioxidants. The EC50 in ethanol extracts of Aloe barbadensis, P. Dr. cornelius and E. laurinze were 3.6, 0.9, and 1.5 mg/mL, respectively. The total polyphenol and flavonoid content in ethanol extract from succulent plants were 3.4 to 20 times more than in the juices: 6.90 g/kg fresh weight (f.w.) and 1.8 g/kg f.w for A. barbadensis, 10.12 g/kg f.w and 1.29 g/kg f.w for P. Dr. Cornelius, and 8.98 g/kg f.w and 2.32 g/kg f.w. for E. laurinze, respectively.