In order to further improve the bearing performance of aerostatic bearings,an aerostatic bearing with multihole integrated restrictor was proposed.The governing equations of aerostatic bearing were derived and discretized by finite difference method in polar coordinates,and the film pressure and loadbearing performance of aerostatic bearings were solved numerically by the overrelaxation numerical iteration method.The results show that the gas film pressure distribution of the aerostatic bearing is decreased with the increase of bearing clearance,and the bearing capacity of aerostatic bearing is increased gradually with the decrease of bearing clearance.With the increase of the number of the orifices,the maximum bearing capacity of aerostatic bearing is increased gradually,but the increase is not obvious when the number of orifices increases to a certain extent.Cyclone phenomena will occur outside the edge of the throttle orifice,and the cyclone and gas flow velocity are decreases with the decrease of bearing clearance.