A synchronous reluctance motor, comprising: a stator; and a rotor, wherein the rotor comprises: a rotation shaft; a first core having a shaft hole for inserting the rotation shaft at a center thereof, and having a plurality of first flux barrier groups arranged along a circumferential direction of the shaft hole and spacing from each other, each first flux barrier group comprising first to third slots (146a, 146b, 146c) arranged from a circumference of the first core towards the shaft hole with a gap therebetween; and a second core having a receiving hole larger than the shaft hole at a center thereof, having a plurality of second flux barrier groups along a circumferential direction of the receiving hole with a gap therebetween, each second flux barrier group comprising a first slot and a second slot arranged from a circumference of the second core towards the receiving hole with a gap therebetween, and stacked at one side of the first core in an axial line direction, wherein the number of slots (156a, 156b) of the second flux barrier group is smaller than the number of slots (146a, 146b, 146c) of the first flux barrier group, characterized in that the first slot of the second flux barrier group and the second slot of the second flux barrier group do not have the same size and/or shape as the first slot of the first flux barrier group and the second slot of the first flux barrier group, respectively. a stator; and a rotor, wherein the rotor comprises: a rotation shaft; a first core having a shaft hole for inserting the rotation shaft at a center thereof, and having a plurality of first flux barrier groups arranged along a circumferential direction of the shaft hole and spacing from each other, each first flux barrier group comprising first to third slots (146a, 146b, 146c) arranged from a circumference of the first core towards the shaft hole with a gap therebetween; and a second core having a receiving hole larger than the shaft hole at a center thereof, having a plurality of second flux barrier groups along a circumferential direction of the receiving hole with a gap therebetween, each second flux barrier group comprising a first slot and a second slot arranged from a circumference of the second core towards the receiving hole with a gap therebetween, and stacked at one side of the first core in an axial line direction, wherein the number of slots (156a, 156b) of the second flux barrier group is smaller than the number of slots (146a, 146b, 146c) of the first flux barrier group, characterized in that the first slot of the second flux barrier group and the second slot of the second flux barrier group do not have the same size and/or shape as the first slot of the first flux barrier group and the second slot of the first flux barrier group, respectively. a rotation shaft; a first core having a shaft hole for inserting the rotation shaft at a center thereof, and having a plurality of first flux barrier groups arranged along a circumferential direction of the shaft hole and spacing from each other, each first flux barrier group comprising first to third slots (146a, 146b, 146c) arranged from a circumference of the first core towards the shaft hole with a gap therebetween; and a second core having a receiving hole larger than the shaft hole at a center thereof, having a plurality of second flux barrier groups along a circumferential direction of the receiving hole with a gap therebetween, each second flux barrier group comprising a first slot and a second slot arranged from a circumference of the second core towards the receiving hole with a gap therebetween, and stacked at one side of the first core in an axial line direction, wherein the number of slots (156a, 156b) of the second flux barrier group is smaller than the number of slots (146a, 146b, 146c) of the first flux barrier group, characterized in that the first slot of the second flux barrier group and the second slot of the second flux barrier group do not have the same size and/or shape as the first slot of the first flux barrier group and the second slot of the first flux barrier group, respectively.