Heavy-duty　hydrostatic　rotary　table　is　an　important　part　of　heavy-duty　CNC　gantry　machine,　which　performance　determines　the　machining　accuracy　and　stability　of　the　machine.　Viscosity　of　hydraulic　oil　is　one　of　the　most　important　factors　which　influence　the　carrying　capacity　of　the　hydrostatic　rotary　table,　but　viscosity　of　hydraulic　oil　is　directly　determined　by　temperature.　Therefore,　the　carrying　capacity　of　the　hydrostatic　rotary　table　is　directly　determined　by　temperature.　This　paper　researches　the　relative　between　the　different　workpiece　quality,　cutting　force,　oil　chamber　pressure,　oil　film　thickness,　oil　film　stiffness　and　temperature　of　hydrostatic　rotary　table　by　using　the　theoretical　method,　and　validates　the　influence　of　temperature　on　the　carrying　capacity　of　the　hydrostatic　rotary　table　by　using　experimental　method.　It　provides　the　basis　for　researching　the　influence　of　environmental　temperature　on　the　carrying　capacity　and　stiffness　of　the　oil　film.