In　view　of　the　hydrostatic　bearing　solid-liquid　interface　velocity　slip　phenomenon,　traditional　Reynolds　equation　is　modified　by　introducing　the　Navier　velocity　slip　boundary　condition　to　oil　film　flow　control　equations.　The　finite　difference　method　and　corresponding　calculating　program　are　used　to　solve　the　modified　Reynolds　equation.　Sensitivity　parameters　describing　the　effect　degree　of　velocity　slip　on　hydrostatic　bearing　performances　are　defined　in　order　to　make　a　quantitative　and　qualitative　analysis.　Velocity　slip　improves　bearing　capacity　to　a　certain　extent,　but　decreases　the　maximum　oil　cavity　pressure　in　bearing.　The　maximum　sensitivity　of　oil　cavity　pressure　is　about　7%,　the　sensitivity　of　bearing　capacity　is　around　81%.