Tea rhizosphere soils of Huangjingui with different planting years were used to research effects of the age of tea tree on soil enzyme activity.The results showed that enzyme activities of acid phosphatase,urease,sucrase,which were related to nutrient cycle,raised as tea tree age increased and was positive related with tea tree age,but activities of neutral phosphatase and alkaline phosphatase were reversed.Polyphenol oxidase,which associated with resistance,showed an upward trend with the increase of tea tree age and significantly positive related with age,while activities of peroxidase,catalase,dehydrogenase reversed.Effects of tea tree with different ages to soil enzyme showed as catalase＞urease＞dehydrogenase＞sucrase＞peroxidase＞polyphenol oxidase＞acid phosphatase＞neutral phosphatase＞alkaline phosphatase.In conclusion,the usage of phosphorus should be improved in the process of tea production and management,and the cultivation and loosening should be strengthened to the old tea tree in order to improve the resistanceassociated enzyme activity in soil.