Aiming at the vector diagram drawing method setting in laser processing technology documents，the points needing attention were put forward.Because of the complexity of laser processing wood,the larch was cut at high speed,and the changing trend of technical parameters in single cutting and 5 times repeated cutting was analyzed by using the orthogonal experiment.The results show that the lens height has the most obvious effect on the seam depth and seam width in the single cutting,then the cutting speed,and finally the power,so the lens height should be adjusted first.In 5 times cutting,power is the primary consideration,followed by lens height and cutting speed.In order to make the results more intuitive,the three dimensional graph analysis method was put forward and the drawing rules were given.By using the method,the univariate analysis and multivariate analysis were carried out for the change rule of different parameters,according to the needs of the analysis target.