Groundwater circulating well technology （GCW） is an in-situ remediation technology that repairs groundwater by creating a three-dimensional circulation for groundwater. This paper describes the development of the technology at home and abroad. It introduces the characteristics， advantages and applicable conditions of UVB， NOVOCs? and DDC as well as their field applications. In view of the problems with groundwater circulation well technology such as limited repair range， long repair time， strict site requirements， unbalanced pumping and injection， it is proposed to improve the technology in terms of large-scale hydraulic control， in-situ biological repair， multi-phase synchronized repair， and integrated intelligent equipment， etc.