The invention relates to a hybrid power assembly of a disc-type motor, sequentially comprising an engine, a clutch, a gearbox and a disc-type motor which is additionally arranged between the clutch and the gearbox. The hybrid power assembly of a disc-type motor is characterized in that a disc-type rotor of the disc-type motor is sleeved on a through shaft of the clutch and the gearbox; stators arranged at both sides of the disc-type rotor are respectively fixed on motor end covers; and the disc-type motor is clamped and fixed between a clutch shell and a gearbox shell along an outer shell and the end covers. The invention selects the disc-type motor to greatly reduce an axial space so that the power assembly has a more compact structure, and the disc-type motor adopts a sleeving structure to be connected with the through shaft of the engine, thereby not only keeping the integrity of the whole disc-type motor, but also providing extreme convenience without disassembling the motor in power maintenance, maintenance or replacement. The disc-type motor can fully utilize and convert the kinetic energy of a vehicle during running down a hill, sliding and braking into electric electricity and can also convert the electric electricity into the kinetic energy to drive the vehicle to run.