With　the　change　of　the　wall　thickness　in　the　milling　process,　the　vibration　of　a　thin-walled　workpiece　is　of　obvious　time-varying　characteristics.　To　realize　the　effective　vibration　control　of　thin-walled　parts　in　the　whole　milling　process,　a　new　technology　of　multiple　dynamic　vibration　absorbers　with　wide　band　was　presented.The　vibration　absorbers　were　arranged　closely　at　the　vibration　sensitive　points　of　workpiece.The　natural　frequency　of　these　absorbers　was　different　to　realize　the　optimal　control　of　time-varying　cutting　vibration.　In　addition,　the　parameters　of　each　dynamic　absorber　were　designed　by　the　global　optimization　method.　Considering　the　minimal　amplitude　of　frequency　response　function　at　the　vibration　sensitive　points　of　workpiece　as　an　optimization　objective,　the　dynamic　parameters　of　the　absorbers　were　obtained　by　the　aid　of　a　finite　element　analysis　software.　Finally,　the　frequency　response　amplitudes　at　vibration　sensitive　points　of　the　workpiece　with　different　wall　thickness　was　analyzed　to　verify　the　effectiveness　of　the　vibration　reduction　method.　The　results　show　that　after　only　once　mounting,the　dynamic　vibration　absorbers　can　realize　the　effective　control　of　the　time-varying　cutting　vibration　in　the　whole　milling　process.　The　frequency　response　amplitude　of　workpieces　generally　can　be　reduced　by　more　than　85%.　©　2018,　Editorial　Office　of　Journal　of　Vibration　and　Shock.　All　right　reserved.