The　measured　frequency　response　functions　(FRFs)　are　directly　used　to　identify　the　bolted　joint　properties.　However,　the　noise　effect　and　the　matrix　inverse　operations　create　ill-posed　problems,　and　a　small　noise　level　may　cause　the　identified　result　to　be　faulty.　A　sensitivity　method　is　developed　to　avoid　the　ill-posed　problems　for　identification　of　the　dynamic　parameters　of　bolted　joints　in　this　paper.　To　calculate　the　sensitivity　of　stiffness　and　damping　for　bolted　joints,　the　sensitive　values　are　used　to　determine　the　frequency　ranges　before　the　identification.　Then,　the　equivalent　stiffness　and　damping　of　bolted　joints　are　identified　by　FRFs　method　in　this　range.　All　results　of　simulation　and　experiment　show　that　the　proposed　method　can　improve　significantly　the　identification　accuracy.　Additionally,　the　sensitivity　method　can　be　used　to　avoid　an　ill-posed　problem　by　eliminating　ill-posed　FRFs　in　some　frequency　range　before　identification.