A hybrid driving module, which has a motor 40 including a rotor 42 and a stator 41, the hybrid driving module comprising: a housing 80 in which the stator 41 is installed; a rotor hub 43 on which the rotor 42 is installed, the rotor hub 43 being configured to be rotatably supported by the housing 80; an axial movement prevention part configured to restrict forward and rearward movements of the rotor hub 43 relative to the housing 80 between the housing 80 and the rotor hub 43; wherein the axial movement prevention part is provided in a bearing B2 or B3 interposed between the housing 80 and the rotor hub 43 and configured to support a rotation of the rotor hub 43 relative to the housing 80; and wherein the bearing is interposed between a peripheral surface at a side of the housing 80 and a peripheral surface at a side of the rotor hub 43 that face each other in a radial direction, wherein the bearing comprises: a first race configured to adjoin a first peripheral surface that is one surface selected from the peripheral surface at the side of the housing 80 and the peripheral surface at the side of the rotor hub 43; a second race configured to adjoin a second peripheral surface that is the other surface selected from the peripheral surface at the side of the housing 80 and the peripheral surface at the side of the rotor hub 43; and a rolling element interposed between the first race and the second race, and wherein the axial movement prevention part comprises: a bearing groove provided in a surface of the first race facing the first peripheral surface; a peripheral surface groove provided in the first peripheral surface and disposed at a position corresponding to the bearing groove; and a clearance prevention ring RR inserted across the peripheral surface groove and the bearing groove. a housing 80 in which the stator 41 is installed; a rotor hub 43 on which the rotor 42 is installed, the rotor hub 43 being configured to be rotatably supported by the housing 80; an axial movement prevention part configured to restrict forward and rearward movements of the rotor hub 43 relative to the housing 80 between the housing 80 and the rotor hub 43; wherein the axial movement prevention part is provided in a bearing B2 or B3 interposed between the housing 80 and the rotor hub 43 and configured to support a rotation of the rotor hub 43 relative to the housing 80; and wherein the bearing is interposed between a peripheral surface at a side of the housing 80 and a peripheral surface at a side of the rotor hub 43 that face each other in a radial direction, wherein the bearing comprises: a first race configured to adjoin a first peripheral surface that is one surface selected from the peripheral surface at the side of the housing 80 and the peripheral surface at the side of the rotor hub 43; a second race configured to adjoin a second peripheral surface that is the other surface selected from the peripheral surface at the side of the housing 80 and the peripheral surface at the side of the rotor hub 43; and a rolling element interposed between the first race and the second race, and wherein the axial movement prevention part comprises: a bearing groove provided in a surface of the first race facing the first peripheral surface; a peripheral surface groove provided in the first peripheral surface and disposed at a position corresponding to the bearing groove; and a clearance prevention ring RR inserted across the peripheral surface groove and the bearing groove. a first race configured to adjoin a first peripheral surface that is one surface selected from the peripheral surface at the side of the housing 80 and the peripheral surface at the side of the rotor hub 43; a second race configured to adjoin a second peripheral surface that is the other surface selected from the peripheral surface at the side of the housing 80 and the peripheral surface at the side of the rotor hub 43; and a rolling element interposed between the first race and the second race, and wherein the axial movement prevention part comprises: a bearing groove provided in a surface of the first race facing the first peripheral surface; a peripheral surface groove provided in the first peripheral surface and disposed at a position corresponding to the bearing groove; and a clearance prevention ring RR inserted across the peripheral surface groove and the bearing groove. a bearing groove provided in a surface of the first race facing the first peripheral surface; a peripheral surface groove provided in the first peripheral surface and disposed at a position corresponding to the bearing groove; and a clearance prevention ring RR inserted across the peripheral surface groove and the bearing groove.