A　two-dimensional　model　is　established　for　studying　the　shear　rate＇s　effect　on　lubricating　oil　of　Newtonian　fluid　and　Non-Newtonian　fluid.　Oil　film＇s　work　properties　of　large　size　and　high-speed　hydrostatic　support　system　are　simulated　by　the　finite　volume　method.　Results　show　that　the　viscosity　of　liquid　changes　with　the　increase　of　the　speed,　and　the　shear　thinning　non-Newtonian　fluid　has　a　better　work　property.　These　are　important　to　the　design　of　the　hydrostatic　support　system　with　large　size　and　high-speed　and　to　the　investigation　of　oil　film＇s　work　properties.