An axial piston-type hydraulic rotary machine comprising: a tubular casing ; a rotational shaft that is rotatably provided in the casing ; a cylinder block that is provided in the casing so as to rotate together with the rotational shaft and has a plurality of cylinder holes that are separated from one another in a circumferential direction and extend in an axial direction; a plurality of pistons that are inserted and fitted into the respective cylinder holes in the cylinder block to be reciprocally movable; and a valve plate that is provided between the casing and the cylinder block and in which one pair of supply and exhaust ports that communicate with the respective cylinder holes are formed, characterized in that a cylinder inlet side tapered surface is formed on each of the cylinder holes in the cylinder block by performing cylinder inlet chamfering from an opening side end surface toward a piston sliding surface of the cylinder hole , a nitriding layer on which nitride-based treatment is performed at least including the piston sliding surface , the opening side end surface of each of the cylinder holes and the cylinder inlet side tapered surface is formed on the cylinder block , the piston sliding surface of each of the cylinder holes is a first compound layer-removed surface from which a compound layer that is also located on the front surface side of the nitriding layer has been removed, and on a part where the first compound layer-removed surface and the cylinder inlet side tapered surface of each of the cylinder holes intersect a second compound layer-removed surface is formed from which the compound layer that is located on the front surface side of the nitriding layer is removed. a tubular casing ; a rotational shaft that is rotatably provided in the casing ; a cylinder block that is provided in the casing so as to rotate together with the rotational shaft and has a plurality of cylinder holes that are separated from one another in a circumferential direction and extend in an axial direction; a plurality of pistons that are inserted and fitted into the respective cylinder holes in the cylinder block to be reciprocally movable; and a valve plate that is provided between the casing and the cylinder block and in which one pair of supply and exhaust ports that communicate with the respective cylinder holes are formed, characterized in that a cylinder inlet side tapered surface is formed on each of the cylinder holes in the cylinder block by performing cylinder inlet chamfering from an opening side end surface toward a piston sliding surface of the cylinder hole , a nitriding layer on which nitride-based treatment is performed at least including the piston sliding surface , the opening side end surface of each of the cylinder holes and the cylinder inlet side tapered surface is formed on the cylinder block , the piston sliding surface of each of the cylinder holes is a first compound layer-removed surface from which a compound layer that is also located on the front surface side of the nitriding layer has been removed, and on a part where the first compound layer-removed surface and the cylinder inlet side tapered surface of each of the cylinder holes intersect a second compound layer-removed surface is formed from which the compound layer that is located on the front surface side of the nitriding layer is removed. <EOS>