In order to optimize the technical parameters of microgrooves processing by laser surface texturing process,a technical investigation on the 45 steel surface was performed by using a Qswitched of light and sound diodepumped Nd:YAG laser.The morphologies of texture were measured by means of WykoNT1100 surface three dimensional profile,and the effects of laser technical parameters as pumping current,pulse repetition rate,scanning speed on the morphologies of texture were analyzed by using single factor method.The results show that,along with increasing of pumping current,the depth and width of microgroove texture are also increased.Along with increasing of pulse repletion rate,the width of microgroove texture is decreased,and the depth is increased first and then decreased.Along with increasing of the scanning speed,the width of microgrooves texture is gradually increased,while the depth is gradually decreased.The ideal microgroove morphology is obtained through the rational optimization of the above parameters.It is found that the optimum ranges of pumping current,repetition rate,and scanning speed are from 15 A to 17 A,from 1 500 Hz to 2 500 Hz,from 10 mm/s to 20 mm/s,respectively.