The　carrying　capacity　of　hydrostatic　bearing　will　be　influenced　by　the　surface　deformation　caused　by　a　combined　action　of　the　load,　flow　pressure,　manufacture　errors,　etc.　In　the　present　work,　a　kind　of　the　Reynolds　equation　based　model　within　surface　waviness　taken　into　consideration　is　established　for　the　analyzing　of　the　load　carrying　ability　of　thrust　bearings　under　linear　deformations.　The　superficial　deformations,　either　convex　or　concave,　could　be　respected　linear　if　it　is　in　a　small　extent.　Then,　expression　of　the　fluid　film　thickness　is　a　regarded　as　the　combination　of　linear　deformations　and　surface　waviness.　By　adaptive　Simpson　quadrature,　the　carrying　capacity　will　be　solved　as　a　result　of　the　numerical　integration　for　a　partial　differential　Reynolds　equation　of　second　order,　which　includes　flow　pressure　and　fluid　film　thickness.