The　dynamic　vibration　absorber　(DVA)　is　generally　used　to　suppress　the　machining　vibration　in　boring　processes.　The　DVA　consists　of　an　additional　mass-spring-damper　sub-system,　and　needs　accurately　tuning　of　its　natural　frequency　and　damping　ratio　to　match　the　main　structure　for　vibration　control.　For　obtaining　the　optimal　performance　of　the　DVA,　the　parameters　of　the　DVA　used　in　a　boring　bar　is　identified　using　modal　correlation　method,　which　combines　the　finite　element　analysis　method　with　test　modal　method　to　validate　the　FEM＇s　results.　The　analysis　results　show　that　the　modal　correlation　method　is　an　effective　and　simple　method　to　accurately　identify　the　dynamic　parameters　of　DVA　and　guarantee　the　optimal　design　of　the　DVA　for　boring　chatter　control.