A　3D　model　of　hydrostatic　turntable＇s　oil　chamber　is　established　to　investigate　the　lubricants　performance　with　different　rheological　properties　by　using　FLUENT　software　and　the　finite　volume　method.　Newtonian　oil　and　non-Newtonian　oil＇s　performance　under　varied　speeds　are　compared　on　the　large　size　hydrostatic　turntable　system　considering　the　temperature-viscosity　relationship　and　pressure-viscosity　relationship.　The　results　show　that　the　property　of　non-Newtonian　fluid　viscosity　influenced　by　shear　rate　largely　affects　the　lubricants　performance　for　most　oil　added　polymer　additives.　Lubricants　cannot　simply　be　regarded　as　Newtonian　fluid.　The　shear　thickening　non-Newtonian　fluid　has　a　better　work　property.　The　results　are　important　to　design　a　large　size　and　high-speed　hydrostatic　support　system,　choose　lubricant　oils,　and　investigate　oil　film＇s　work　properties.　©　Higher　Education　Press　and　Springer-Verlag　Berlin　Heidelberg　2011.