Hydraulic static pressured guide is the important function unit of precision machine tool. Hydraulic station is indispensable and supplementary unit for hydraulic static pressured guide in normal operation，and must provide hydraulic static pressured guide with lubricating oil of invariable pressure. An ultra-precision hydraulic station for hydraulic static pressured guide was designed. In this hydraulic station, lubricating oil was provided by precision gear pump driven by variable frequency motor, and pressure export was ensured to be steady by full-closed loop feedback control. The export pressure precision of the hydraulic station can reach ±0.05%.Good effect is gained in the application of the hydraulic station on the hydraulic static pressured guide of ultra-precision machine tool.