The fabrication of surface micro textures is a rather complex process,involving size,quality and morphology of microtexture.In order to solve problems of fabricating micro textures,microgroove texture was fabricated on 45 steel surface by numerical control WEDM technology.The size and morphology of the micro textures fabricated by WEDM were studied.The orthogonal experiments of pulse width,pulse stop and current were designed by using molybdenum wire and copper wire as electrode wires respectively.The microgroove textures with cutting width less than 400 μm were cut.The effects of different wire cutting parameters and electrode wire materials on the microgroove sizes accuracy and the smoothness of the microgroove incisions were analyzed.Through collecting and measuring the microgroove textures on the workpiece surface,it is found that wire cutting parameters have a great influence on the microgroove sizes accuracy and the smoothness of the incisions.Under smaller wire cutting parameters,the microgroove sizes of molybdenum wire cutting are larger than that of copper wire cutting;under larger wire cutting parameters,the microgroove sizes of copper wire cutting are larger than that of molybdenum wire cutting.The overall quality of the groove cut by molybdenum wire is better than that of copper wire.The microgroove sizes of different WEDM parameters are listed in the experiment,which provides experimental data for WEDM micro textures processing.