To provide a hydrostatic journal bearing of low manufacturing cost and having a hydraulic self-compensation structure.

The self-compensating hydrostatic journal bearing includes: a base to mount a shaft, the base having a hole pierced to mount the shaft on the base forming a circumferential surface, the base further having a gap adapted to circulate a hydraulic liquid between the shaft and the circumferential surface; at least two oil holes provided in the base; at least two first chambers provided on the circumferential surface oppositely to each other, each communicated with one of the oil holes; second chambers each provided to adjoin the first chambers; and at least two channels provided attached to the base, with a second end of each channel 2-communicating with the second chamber opposite to a first end. By this arrangement, when a bearing force is biased, a direction of the bias and an opposite gap are varied to permit the hydraulic liquids to pass respective passages and makes the oppositely located first chamber and second chamber generate a self-compensating function of a flow rate.