The total phenols,anthocyanins,proanthocyanidin,monomer polyphenol and antioxidant activities of three varieties of blueberry were compared.The results of UPLC showed that chlorogenic acid was the highest in phenolic in three blueberries;EGC was the highest flavanols in highbush blueberries and rabbiteye blueberries;ECG was the highest flavanol in lowbush blueberry.The highest flavonol in three blueberries was rutin,the total phenolic compounds in lowbush blueberry were more than highbush blueberries and rabbiteye blueberries.The antioxidant activities results showed that lowbush blueberry have the strongest antioxidant capacity in DPPH,ABTS and FRAP.Correlation analysis showed that total phenolics,total anthocyanin and proanthocyanidin content in blueberries were all significantly positive correlated with antioxidant capacity.