A salient-pole rotor comprising: a rotary shaft ; a magnetic pole portion formed of a plurality of ferromagnetic materials stacked in an axial direction and having a base portion which extends in an axial direction of the rotary shaft and a plurality of protruding portions which protrude outward in a radial direction of an axis from the base portion , said protruding portions being disposed to be spaced apart from each other at intervals in a circumferential direction of the rotary shaft and have outer circumferential surfaces along an imaginary cylindrical surface (K1) centered on the axis; a concave portion reinforcing portion which is provided in a concave portion between mutually adjacent protruding portions in the magnetic pole portion , formed of a non-magnetic material and has a shape in which an outer circumferential surface follows the imaginary cylindrical surface (K1); and a cylindrical reinforcing portion formed in a cylindrical shape which covers the magnetic pole portion along the imaginary cylindrical surface (K1) and the outer circumferential surface of the concave portion reinforcing portion and is formed of a non-magnetic material, wherein the magnetic pole portion has a plurality of slits which extend in the circumferential direction at a radial inner portion of the concave portion in the base portion to be spaced apart from each other at intervals in the radial direction, the slits being formed in a concave curved shape toward the radial outer side of the rotary shaft , both ends of the slits in the circumferential direction of the rotary shaft being formed in a tapered shape, the slits each having a plurality of slit dividing portions , the slit dividing portions dividing an inner space of each slit in the circumferential direction of the rotary shaft , the magnetic pole portion further includes a slit reinforcing portion which is provided inward from the slit and formed of a non-magnetic material. a rotary shaft ; a magnetic pole portion formed of a plurality of ferromagnetic materials stacked in an axial direction and having a base portion which extends in an axial direction of the rotary shaft and a plurality of protruding portions which protrude outward in a radial direction of an axis from the base portion , said protruding portions being disposed to be spaced apart from each other at intervals in a circumferential direction of the rotary shaft and have outer circumferential surfaces along an imaginary cylindrical surface (K1) centered on the axis; a concave portion reinforcing portion which is provided in a concave portion between mutually adjacent protruding portions in the magnetic pole portion , formed of a non-magnetic material and has a shape in which an outer circumferential surface follows the imaginary cylindrical surface (K1); and a cylindrical reinforcing portion formed in a cylindrical shape which covers the magnetic pole portion along the imaginary cylindrical surface (K1) and the outer circumferential surface of the concave portion reinforcing portion and is formed of a non-magnetic material, wherein the magnetic pole portion has a plurality of slits which extend in the circumferential direction at a radial inner portion of the concave portion in the base portion to be spaced apart from each other at intervals in the radial direction, the slits being formed in a concave curved shape toward the radial outer side of the rotary shaft , both ends of the slits in the circumferential direction of the rotary shaft being formed in a tapered shape, the slits each having a plurality of slit dividing portions , the slit dividing portions dividing an inner space of each slit in the circumferential direction of the rotary shaft , the magnetic pole portion further includes a slit reinforcing portion which is provided inward from the slit and formed of a non-magnetic material. <EOS>