On the basement of thoroughly researching of optical computer-aided design

applying the wavelength aberration theory which was estiblished by Micheal P. chrisp

this article has fabricated completefunction software which can be used in designing monochromator

spec-trograph.This software has functions of calculating aberrations

auto-designing

calculating resolving capability

drawing. The shape can be plane

sphere

ellipsoid

toroidal

paraboloid. The optical system can include some mirrors and holographic gratings.Compared with a few standard examples.such software have proved itself to be acurate in calculating aberrations

the effect of auto-desisn is good

and all of its functions are reliable. So this software can be used in real designing.