Rhizoma of Smilax china has been used as anti-inflammatory and analgesic, antiedemic agent in Korean folk medicine. In order to investigate the efficacy of anti-oxidative activity, the activity-guided fractionation and the isolation were performed. Each fractions ($H_2O$ fraction, 20％, 40％, 60％, 100％ MeOH fractions and CHCl$_3$ fraction) was examined antioxidant activity by 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging potential. It was revealed that 40％, 20％ MeOH fractions and $H_2O$ fractions have significant anti-oxidative activity. From 40％ and 20％ MeOH fractions two flavonoid glycosides and one procyanidin were isolated and elucidated apigenin-7-Ο-$alpha$-L-rhamnopyranosyl(1longrightarrow2)-$eta$-D-glucopyranoside, apigenin-7-Ο-$alpha$-L-rhamnopyranosyl(1longrightarrow6)-$eta$-D-glucopyranoside and catechin(4$alpha$longrightarrow6)epicatechin through their physicochemical data and IR, FAB-MS, $^{13}$ C-NMR, and $^1$H-NMR analysis with authentics, respectively. The isolated compounds were examined by DPPH method. Apigenin-7-Ο-$alpha$-L-rhamnopyranosyl(1longrightarrow2)-$eta$-D-glucopyranoside and catechin (4$alpha$longrightarrow6) epicatechin showed powerful radical scavenging activities on DPPH radical among three compounds.