Planetary　roller　screw　is　a　new　type　of　precision　transmission　mechanism,　its　unique　structure　brings　great　difficulties　to　machining.　In　order　to　ensure　the　processing　quality　of　the　nut　in　the　planetary　roller　screw　and　improve　grinding　efficiency,　the　influence　of　the　linear　speed　of　the　grinding　wheel,　the　speed　of　headstock　and　the　grinding　depth　on　the　surface　quality　of　the　screw　thread　is　researched　by　single　factor　experiments　in　this　paper.　The　results　show　that　increasing　the　linear　speed　of　the　grinding　wheel　and　reducing　the　grinding　depth　are　conducive　to　improving　the　surface　quality.　With　the　increase　of　headstock　speed,　the　surface　roughness　of　screw　thread　presents　the　trend　of　＇decreasing　first　and　then　increasing＇.　At　the　same　time,　the　wear　law　of　the　radius　of　rounded　root　of　CBN　grinding　wheel　and　K　value　under　different　linear　speed　conditions　are　researched,　and　the　dressing　cycle　of　internal　thread　high-speed　grinding　wheel　is　found　in　this　paper.　©　The　Author(s),　under　exclusive　license　to　Springer　Nature　Singapore　Pte　Ltd.　2023.