A hybrid power drive system, including a power battery device (1; 110), a range extender system, and a motor drive system, wherein the power battery device is configured to supply power to the motor drive system, the range extender system includes an engine (50; 201) and a generator (30; 202), and the generator is able to generate power under the driving of the engine to supply the power to the motor drive system and/or charge the power battery device; and the hybrid power drive system further including: a vehicle control unit, configured to control the engine and/or the generator of the range extender system to generate a driving force, wherein the range extender system is mechanically connected to a main coupling mechanism (4; 21) to transmit the generated driving force to a main drive axle of a vehicle by means of the main coupling mechanism, to drive wheels on both sides of the axle to rotate, wherein the vehicle further including one or more auxiliary drive axles, wherein the motor drive system includes a motor drive subsystem corresponding to at least one of the main drive axle and the auxiliary drive axles, and the motor drive subsystem is configured to transmit the generated driving force to the corresponding drive axle, wherein the motor drive system includes a motor drive subsystem corresponding to the auxiliary drive axle, the motor drive subsystem corresponding to the auxiliary drive axle includes two sub-drive motors (80; 70; 120; 130), and the two sub-drive motors transmit the driving force to the auxiliary drive axle via a coupling mechanism to drive wheels on both sides of the axle to rotate, wherein the motor drive system further includes a motor drive subsystem corresponding to the main drive axle, the motor drive subsystem corresponding to the main drive axle includes a main drive motor (3; 60), and the main drive motor is mechanically connected to the main coupling mechanism to transmit the generated driving force to the main drive axle of the vehicle through the main coupling mechanism, and wherein the main drive motor (3; 60) and the generator (30; 202) are two separate components. wherein the range extender system is mechanically connected to a main coupling mechanism (4; 21) to transmit the generated driving force to a main drive axle of a vehicle by means of the main coupling mechanism, to drive wheels on both sides of the axle to rotate, wherein the vehicle further including one or more auxiliary drive axles, wherein the motor drive system includes a motor drive subsystem corresponding to at least one of the main drive axle and the auxiliary drive axles, and the motor drive subsystem is configured to transmit the generated driving force to the corresponding drive axle, wherein the motor drive system includes a motor drive subsystem corresponding to the auxiliary drive axle, the motor drive subsystem corresponding to the auxiliary drive axle includes two sub-drive motors (80; 70; 120; 130), and the two sub-drive motors transmit the driving force to the auxiliary drive axle via a coupling mechanism to drive wheels on both sides of the axle to rotate, wherein the motor drive system further includes a motor drive subsystem corresponding to the main drive axle, the motor drive subsystem corresponding to the main drive axle includes a main drive motor (3; 60), and the main drive motor is mechanically connected to the main coupling mechanism to transmit the generated driving force to the main drive axle of the vehicle through the main coupling mechanism, and wherein the main drive motor (3; 60) and the generator (30; 202) are two separate components.