Objectives : This study were carried out to investigate the anti-oxidative activities of $gamma$-SPE(gamma irradiated shell of Persicae semen extract with ethanol). Methods : Anti-oxidative was measured by DPPH free radical scavenging activities, nitric oxide radical scavenging activities, SOD-like activities, xanthine oxidase radical scavenging activities, nitrite scavenging activities and tyrosinase inhibition activities. Results : Effects of free radial scavenging was increased by irradiation. Tyrosinase inhibition activities was decreased by $gamma$-SPE. Conclusions : Results suggested that $gamma$-SPE have a potential as a new anti-oxidative material.