In　the　finite　element　numerical　simulation　of　the　non-linear　whole　process　curve　of　the　force-displacement　relation　of　materials,　components　and　structures,　the　simulation　of　ultimate　strength　and　the　subsequent　softening　and　declining　curve　segment　are　always　a　difficult　problem　not　well　solved.　The　incremental　displacement　control　method　can　conveniently　step　over　the　extreme　point　of　the　force-displacement　relation　curve,　thusly　it　is　usually　applied　in　solving　the　non-linear　whole　process　curve　of　the　force-displacement　relation　of　materials,　components　and　structures　containing　the　softening　and　declining　curve　segment　behind　the　ultimate　strength　point.　But　the　traditional　incremental　displacement　control　method　needs　to　rearrange　the　stiffness　matrix　of　the　finite　element　equations,　and　there　is　also　a　problem　of　solving　asymmetric　or　non-zonal　coefficient　equations,　consequently　its　popularization　and　application　are　restricted.　In　this　paper,　a　new　incremental　displacement　control　method　is　proposed.　By　modifying　the　related　diagonal　coefficients　in　the　stiffness　matrix,　this　method　conceals　the　displacement　control　conditions　of　the　boundary　and　the　force　functional　points　in　the　finite　equations,　and　thereby　it　can　be　solved　in　the　same　way　with　the　finite　element　load　control　method,　ensuring　the　symmetry　and　zonality　of　the　coefficient　matrix　of　the　finite　element　equations　in　the　solving　processes,　and　it　can　be　conveniently　implemented　in　current　commercial　finite　element　software.　The　example　analysis　shows　the　effectiveness　of　this　method.