The utility model discloses a hybrid drive system, including flywheel assembly, one -way guide pulley assembly, closing plate, shock absorber assembly, double clutch assembly, motor assembly and release bearing and transmission input shaft, the wheel shaft sleeve that flies of one -way guide pulley assembly passes through the external splines and is connected with the internal spline of flywheel assembly, and the closing plate holds shock absorber assembly, double clutch assembly, motor assembly, release bearing and transmission input shaft in the gearbox coolant oil through being connected with transmission housing. Engine power spreads into transmission input shaft by flywheel assembly side into through one -way guide pulley assembly, shock absorber assembly and double clutch assembly, and motor dynamic spreads into transmission input shaft into by double clutch odd number shaft -cup. The output and the interrupt of one -way guide pulley assembly control engine power constitute threekinds of power drive modes. The utility model has the advantage of simple structure, the compactness, and be convenient for match.