Accessorial program is actually indispensable to implement the avoidance of ghost image in complex optical systems because common optical CAD software could not accomplish ghost analysis alone. This paper proposes a method that uses programs designed to deal with the output of ZEMAX,so as to export ghost image layout conveniently. The executive results are accurate and the ghost image layouts of complex optical systems are visual and legible. This method could be applied to the high power laser systems design efficiently.