As　a　new　kind　of　mechanisms,　the　compliant　mechanism　accomplishes　the　transmission　or　transformation　of　motion,　force　and　energy　by　the　elastic　deformation　of　component　itself.　It　is　an　advanced　aspect　in　the　study　of　the　mechanisms.　A　new　dynamic　model　of　compliant　links　with　different　loads　(end　moment　or　vertical　force)　is　proposed　based　on　2R　pseudo-rigid-body　model　(PRBM).　The　kinetic　energy　and　deformation　energy　are　obtained　based　on　the　new　dynamic　model.　The　dynamic　equations　of　compliant　links　are　derived　via　Lagrange　equation.　Compared　with　the　1R　pseudo-rigid-body　dynamic　model　(PRBDM),　the　equation　property　and　dynamic　response　of　each　pseudo-rigid-body　dynamic　model　are　analyzed.　The　superiority　of　the　2R　pseudo-rigid-body　dynamic　model　is　presented.　The　validity　of　the　new　model　is　verified　in　the　example　of　a　planar　compliant　parallel-guiding　mechanism.　The　numerical　results　indicate　that　not　only　the　motion　trend　but　also　the　internal　local　deformation　of　compliant　links　are　described　in　the　2R　pseudo-rigid-body　dynamic　model.　The　2R　pseudo-rigid-body　dynamic　model　can　be　used　to　show　the　dynamic　behavior　of　compliant　mechanisms　and　is　suitable　for　the　dynamics　analysis　and　design　of　compliant　mechanisms.　©　2012　Journal　of　Mechanical　Engineering.