Abstract:The benefits of exogenous enzyme technologies include environmental protection，low energy consumption，and low cost.The use of such technologies in tea processing has gradually been recognized and studied.With the goal of minimizing undesirable by-products，the use of exogenous enzymes for the processing of various types of tea，as well as the artificial control of the enzyme activities allow the transformation of the physical and chemical components of tea and the consequent maintenance or even improvement of the overall quality of tea products.This article reviewed in detail the application of exogenous enzymes in the processing of six major types of tea in recent years and analyzed the existing problems.Future research directions in the context of exogenous enzyme technologies in tea processing were considered，with the goal to further improve the quality of tea products.