By calcu lating the areas of the lateral aberration curves accord ing to Tchebycheff num erical integration m ethod,an im age-quality index based on these areas was set up in order to simu late the im age-quality m erit function that always is used in damped least square(DLS).And then,it is used in the adaptive optical autom atic design program as an optim iza-tion index,thus realize the composite of these two optim ization ideas.Th is composite can improve fish-eye lens’in itial structure rap id ly and procure the auto-design process of fish eye lens convergence qu ickly.Added to th is,the virtual reality techn ique,successive mu lti-link-c ircu lar“morb id ity”process m ethod is also put forward in th is paper.Here,virtual lens can conquer“ray-overflow,” break away from“morb id ity”and seek the simp lest optical structure;And virtual variab le stops and the“morb id ity”processm ethod can conquer the d ifficu lties during optim ization of IR fish-eye lens,such as slowly convergence，divergence,oscillation or no optimization solution,etc.and make convergence procedure quickly and stably.A example is given in the end.