The utility model discloses a nuclear main pump hydrostatic bearing test bench thrust tile fuel feeding hydraulic control system, including hydrostatic bearing, three oil supply unit and dump pump, the hydrostatic bearing be equipped with a three fuel feeding chamber and an oil gallery, three fuel feeding chamber is respectively through three oil supply unit and oil tank intercommunication, the oil gallery of hydrostatic bearing pass through dump pump and oil tank intercommunication, oil supply unit include oil pump, energy storage ware and switching -over valve, the oil inlet and the oil tank intercommunication of oil pump, the oil -out of oil pump and the fuel feeding chamber of hydrostatic bearing intercommunication, be equipped with flow sensor on the pipeline of oil pump and hydrostatic bearing intercommunication, flow sensor is connected with the flow measurement signaling apparatus, and the flow measurement signaling apparatus is connected with the switching -over valve, the energy storage ware connect on the pipeline of oil pump and the oil feed chamber intercommunication of hydrostatic bearing through the switching -over valve. The utility model discloses simple structure, with low costs, and the fluid flow in the three fuel feeding chamber of ability automated inspection ensure three routes fluid constant flow.