Aim at improving accuracy and speed of operation for garment computer aided process plan system, realizing process intellectualization; a method of forming typical process based on group technology was presented. Through forming compound process, coding process using mixed way and judging similarity of decision condition code, the method could form a typical process. Then typical processes separately store in library of process. Finally, the rule of proximity was adopted to select typical process and calculate Standard Time which has existed in library corresponding to each typical process. The result shows that the above method can realize the formation of typical...