Abstract:In order to study the local different types of tea in tea polyphenols antioxidant capacity，this paper，taking Fanjing mountains green tea，white tea Fanjing mountains small sauce，tongren bitter butyl tea and Shi Qian moss tea （black tea）as raw materials，in the development of three phenol concentration of 0.4 mg/mL，PBS buffer pH=8.0，the development of three phenol with PBS buffer solution （pH=8.0）volume ratio=0.1：5，under the condition of the reaction time of 25 min，ultraviolet spectrum scanning through the development of three phenol autoxidation system to evaluate its antioxidant activity.The results showed that：the ability of tea polyphenols to scavenge superoxide radicals（IC50）was 0.08，0.098，0.119mg/mL and 0.136 mg/mL，respectively.According to this，different types of tea had different antioxidant capacity of tea polyphenols，and green tea had the highest antioxidant capacity，followed by xiaojiang white tea，kuding tea and black tea，and the antioxidant capacity had a good linear relationship with the concentration of tea polyphenols，which provided certain theoretical basis for later application research.