The invention discloses a wet clutch dualistic steel sheet body heat dissipation structure. The wet clutch dualistic steel sheet body heat dissipation structure comprises a wet clutch dualistic steelsheet body and oil grooves. The multiple integrally-formed oil grooves are evenly distributed in a wet clutch dualistic steel sheet body inner core. By means of the above manner and the provided wet clutch dualistic steel sheet body heat dissipation structure, the surface temperature of a wet clutch friction plate is reduced, failures of the wet clutch friction plate due to the high temperature are avoided, durability that the friction plate transmits larger torque is improved, and the application range of the wet clutch is greatly enlarged.