The two-component waterborne epoxy system consists of waterborne epoxy emulsion and waterborne epoxy curing agent.The composition and structure of waterborne epoxy curing agent have a direct effect on the performance of the coating film.In this paper,the curing agents were classified according to curing temperature,the types,advantages and disadvantages of room temperature curing agents were mainly introduced,the preparation technology,modification methods and application conditions of various room temperature curing agents were summarized,the existing problems of two-component room temperature curing system at present were summarized,and the future research direction of the waterborne epoxy curing agent was prospected,which provided a reference for further modification to prepare curing agents with excellent curing properties.