The　pseudo-rigid-body　model　(PRBM)　used　to　simulate　compliant　beams　without　inflection　point　had　been　well　developed.　In　this　paper,　two　types　of　PRBMs　are　proposed　to　simulate　the　large　deflection　of　flexible　beam　with　an　inflection　point　in　different　configurations.　These　models　are　composed　of　five　rigid　links　connected　by　three　joints　added　with　torsional　springs　and　one　hinge　without　spring　representing　the　inflection　point　in　the　flexural　beam.　The　characteristic　radius　factors　of　the　PRBMs　are　determined　by　solving　the　objective　function　established　according　to　the　relative　angular　displacement　of　the　two　rigid　links　jointed　by　the　hinge　via　genetic　algorithm.　The　spring　stiffness　coefficients　are　obtained　using　a　linear　regression　technique.　The　effective　ranges　of　these　two　models　are　determined　by　the　load　index.　The　numerical　result　shows　that　both　the　tip　locus　and　inflection　point　of　the　flexural　beam　with　single　inflection　can　be　precisely　simulated　using　the　model　proposed　in　this　paper.