We deduced the coefficients of wave front aberration for plane symmetric grating system combined with in more kinds of sur- face figure(toroid
Parabaloid
ellipsoid etc)
according to Micheal P. Chrisp's wave front aberration thory of holographic toroidal grating system and have worked out the calculation programs with respect to the coefficients.We have also done calculations for several Plane grating mono- chrometers.It has shown that the method is very effective for design and analysis of these system.