this　paper　uses　specimens　of　different　surface　roughness　classes　before　and　after　compression　cycle　to　make　indentation　hardness　test　delamination　by　spherical　indenter,　We　get　different　influences　and　changes　of　surface　roughness　of　the　specimen　surface　in　the　same　kind　of　processing　methods.　The　results　showed　that　with　the　increase　in　roughness　class,　level　of　deep　processing　and　compression　effects　which　affects　deep　layer　will　increase.　After　the　material　through　a　cycle　compression,　its　surface　will　change　accordingly　elastoplastic,　thus　affects　its　stress　layer.