The invention provides a swash plate type hydraulic rotating machine which can be produced at enhanced productivity and in which sliding surfaces of tilt angle adjusting cylinders have high seizure resistant and wear resistant properties. In a swash plate type hydraulic rotating machine, pistons are circumferentially arranged in a cylinder block rotating together with a rotating shaft, the pistons reciprocate with the front ends thereof sliding on a swash plate, and the swash plate is supported by a swash plate supporting section so as to be tiltable relative to the rotating shaft. The swash plate type hydraulic rotating machine is also provided with a tilt adjusting drive section (47) for changing the tilt angle theta of the swash plate. The tilt adjusting drive section (47) has tilt adjusting large-diameter and small-diameter cylinder chambers (42, 43) and also has tilt adjusting large-diameter and small-diameter pistons slidingly moving in the cylinder chambers (42, 43) to change the tilt angle theta of the swash plate. Those surfaces of the inner peripheral surfaces (42a, 43a) of the cylinder chambers (42, 43) which slide against the tilt adjusting pistons have hardened sections (48, ...) hardened by using laser beams.