The thiobarbituric acid value(TBA),peroxide value(POV),acid value(AV),and total volatile nitrogen(TV-N) of chilled pork were determined with the aim to investigate antioxidant activity of grape seed extract (GSE).Results showed that GSE effectively inhibited POV,TBA,and TV-N of the chilled pork.Treatment with 0. 05%GSE reduced POV by 62%,TBA by 68%,and TV-N by 31%compared with the blank control after 8 days, indicating the perfect antioxidant effect.GSE didn't show significant effects on inhibition of AV.The capability of inhibitory action by treating with 0.05%GSE was equivalent to that of catechin.It was greater than that of vitamin C and propolis.At the same added level,the free radical elimination ability of GSE was greater than that of vitamin C and propolis.