[Objective] To study antioxidation of tannin from pomegranate rind and green tea. [Method] Antioxidation of tannin was studied in terms of OH· clearance rate, O-2 clearance rate and antioxidant activity on fat. [Result] The free radical clearance capacities were higher in green tea than that in pomegranate rind. The tannin from green tea had strong antioxidant ability on unsaturated fatty acids and weak antioxidant ability on saturated fatty acid, and the tannin from pomegranate rind was on the contrary. [Conclusion] The tannin from green tea was more suitable for research in healthy and beauty world. [Objective] To study the antioxidation of tannin from pomegranate rind and green tea. [Method] Antioxidation of tannin was studied in terms of OH · clearance rate, O-2 clearance rate and antioxidant activity on fat. [Result] The free radical clearance capacities the higher in green tea than that in pomegranate rind. The tannin from green tea had strong antioxidant ability on unsaturated fatty acids and weak antioxidant ability on saturated fatty acid, and the tannin from pomegranate rind was on the contrary. green tea was more suitable for research in healthy and beauty world.