Abstract: Theoretical research on heat pipes with wick groove structure (grooved heat pipes) is reviewed. The geometric appearance of groove wick is clear and less randomness. Therefore，the research on grooved heat pipe is in favor of finding out the micro-flow and micro-phase change heat transfer processes，especially for micro-energy systems，such as microfin and narrow groove. Since the easiness in second-fabrication and anisotropic characteristics of well of the groove structure，the grooved heat pipe can be applied in the areas of heat dissipation of electronics compound，centrifugal field and electromagnetic field.