In recent year, We are concerned about anti-aging, disease-protection, long-life, many methods are used in solving this problem. And Those are related with antioxidative ability. Recently, We heard that Cucurbita moschata Duch. has anti-hypertensive effect and good for health. So I let made a experiment for this result of the anti-oxidant effect of Cucurbita moschata Duch. used for 3 methods, those are DPPH radical scavenging activity, Nitric oxide(NO) radical scavenging activity and Bovine serum albumin(BSA). The results of this study were as follows: We measured level of DPPH radical scavenging activity. And we obtained results that the ability of DPPH radical``s elimination was increased when concentration of Cucurbita moschata Duch. was to 20 ㎎/㎖. We measured level of Nitric oxide(NO) radical scavenging activity. And we founded that the ability of NO radical``s elimination was increased when concentration of Cucurbita moschata Duch. was to 10 ㎎/㎖. When we inspected antioxidation with Bovine serum albumin(BSA). And we obtained that antioxidative ability was increased after 2.5 ㎎/㎖ of Cucurbita moschata Duch.. So I guess that Cucurbita moschata Duch. has effect of antioxidative ability. Hereafter we need differential experimental methods for evidence of antioxidative effect on Cucurbita moschata Duch.