Abstract:The effects of different treatments on the antioxidant activity of apple were studied.The apple was respectively peeled，squeezed and sterilized.The contents of vitamin C，total phenol，total flavonoid and antioxidant activity of each sample were determined.At the same time，the correlations among the indexes were analyzed.It was shown that the antioxidant activity of all the samples were in a descending order as follow：peel＞whole fruit＞pomace＞pulp＞juice＞bactericidal juice.The contents of vitamin C，total phenol and total flavonoid in peel were higher than other samples.Vitamin C，total phenol，total flavonoid and antioxidant activity in apples were significantly positively correlated.Therefore，in order to have the maximum antioxidant activity，it was recommended that people eat apples with peel.