Acceleration　signals　are　often　used　in　engineering　systems　to　obtain　the　vibration　velocity　or　displace⁃　ment　of　objects.　However，the　inevitable　noise　in　the　acceleration　signals　will　cause　the　baseline　drift　of　the　integrat⁃　ed　velocity　and　displacement，which　will　cause　the　distortion　of　the　real　signal，and　even　completely　cover　the　real　signal　in　severe　cases.　This　article　systematically　compares　and　studies　the　four　kinds　of　methods　in　time-domain　for　this　problem，analyzes　the　basic　principles　and　shows　the　processing　results　of　an　acceleration　sample.　Meanwhile，it　also　points　out　the　limitations　of　various　methods.　On　this　basis，this　paper　proposes　a　new　method　named　as　the　Iwan-EMD　method　in　the　time　domain.　The　simulation　signal　verifies　the　rationality　of　the　new　method.　©　2022　Science　Press.　All　rights　reserved.