There　are　many　problems　of　data　processing　and　visualization　in　the　post-processing　of　Staad-Pro　(a　kind　of　commercial　software　for　CAE　of　steel　structure　of　boiler).　In　order　to　improve　the　efficiency　and　veracity　of　post-processing　of　CAE,　a　kind　of　application　software　for　automatic　post-processing　and　visualization　is　developed.　The　numerical　results　of　CAE　of　steel　structure　are　analyzed　and　processed　in　C　language.　The　miscellaneous　data　are　recognized　with　the　data　structure　theory　and　database　techniques　and　the　needed　data　for　visualization　is　obtained.　The　visualized　post-processing　of　CAE　of　steel　structure　is　carried　out　in　VC++　and　the　secondary　development　tool　ARX　of　AutoCAD,　and　many　more　scientific　and　laconic　DWG　graphics　are　generated.　The　spatial　distributions　of　physical　parameters　of　steel　structure　can　be　depicted　intuitively.　Thus　the　complex　visualization　of　post-processing　of　CAE　of　steel　structure　is　greatly　simplified,　and　the　efficiency　of　visualization　is　improved.