Based　on　the　analysis　and　processing　of　acceleration　signals,　the　time　domain　least　square　method　and　frequency　domain　analytic　method　are　proposed　to　identify　the　parameters　of　vibration　absorption　system.　The　mathematical　model　of　vibration　reduction　and　Simulink　simulation　system　are　established,　two　parameter　identification　methods　are　validated　by　known　system　parameters　and　vibration　signals;　and　then,　based　on　the　acceleration　signal,　the　influence　of　signal　processing　on　identification　accuracy　is　analyzed.　The　two　identification　methods　proposed　in　this　paper　can　accurately　identify　the　parameters　of　the　vibration　absorption　system,　Finally,　the　experimental　results　show　that　the　two　identification　methods　have　good　engineering　applicability　and　scientific　research　applicability.　©　Published　under　licence　by　IOP　Publishing　Ltd.