The　strong　demand　for　increasing　productivity　and　workpiece　quality　in　high-speed　milling　make　the　machine-tool　system　has　to　operate　close　to　the　limit　of　its　dynamic　stability.　This　requires　that　the　chatter　stability　is　predicted　accurately　to　determine　the　optimal　milling　parameters.　An　analytical　stability　prediction　method　was　proposed　with　multidegree-of-freedom　(MDOF)　system　modal　analysis.　This　paper　describes　the　development　of　this　new　method　which　allows　considering　the　effects　of　multi-mode　dynamics　of　system,　higher　excited　frequency　(i.e.　tooth　passing　frequency)　and　wider　spindle　speed　range　on　stability　limits　in　high-speed　milling,　and　these　to　help　in　selection　of　milling　parameters　for　a　maximum　material　removal　rates　(MRR)　in　real　operations　without　chatter.　Some　tests　were　carried　out　to　demonstrate　the　quality　of　this　method　used　in　real　machining.　Final,　the　main　influencing　factors　of　stability　limits　in　high-speed　milling　were　analyzed.　(C)　2008　Elsevier　B.V.　All　rights　reserved.