Dual gear train driving structure at input side of basin-type gear

For the dual gear train driving structure at input side of basin-type gear of the present invention, the differential gear set input rocker arm driven by the basin-type bevel gear in the differential gear set assembly is made to be driven by two sets of transmissions, in which the first transmits the rotary kinetic energy between the differential gear set input rocker arm and the engine, the second transmission transmits the rotary kinetic energy between the differential gear set input rocker arm and the second driving unit, and one or both of the transmissions drives the differential gear set input rocker arm.