Dynamic　performance　of　hydrostatic　rotary　table　has　a　greater　impact　on　its　comprehensive　properties,　so　in-depth　study　on　the　dynamic　performance　of　hydrostatic　rotary　table　has　an　important　role　for　its　optimal　design　and　enhances　its　overall　performance.　The　nonlinear　load-carrying　capacity　of　supporting　and　preloaded　pads　which　consider　surface　roughness　is　calculated　according　to　Christensen＇s　model.　A　new　multi-dimensional　dynamic　model　for　quantitative　type　hydrostatic　rotary　table　is　established.　The　dynamic　equation　is　solved　by　Runge-Kutta　method　to　get　the　dynamic　responses,　stability　time　and　stability　film　thickness.　The　influence　of　various　design　parameters　are　analyzed　like:　surface　roughness,　initial　film　thickness,　flow　rate　of　the　constant　pump　and　so　on.　This　research　shows　that　the　unbalance　loading　degrade　the　dynamic　performance　of　hydrostatic　rotary　table.　Thinner　oil　film　and　bigger　flow　rate　is　good　for　improving　performance　of　hydrostatic　rotary　table.　Surface　roughness　may　considerably　influence　the　operating　characteristics　of　this　rotary　table　and　that　the　direction　of　the　influence　depends　upon　the　type　of　roughness　assumed.　Dynamic　modeling　and　analysis　conclusions　presented　will　provide　a　theoretical　basis　for　the　optimal　design　and　enhance　the　comprehensive　properties　of　hydrostatic　rotary　table.　©　2015　Journal　of　Mechanical　Engineering.