Aiming at the reason that cutting piece comes into being distorted about the CNC plasma cutting machine,the analysis towards the distortion of cutting piece in this paper.According to the characteristic of CNC plasma cutting machine,it could improve the process quality of cutting piece in effect tbr choosing proper technics,for example,cutting section point,aspect,sequence,speed etal during the period of processing,and elaborating towards the distortion control of single side piece, slightness pie...