Aiming at the research of friction heat generation and temperature field of friction type CVT,taking the self-designed new type bevel gear-roller flat plate CVT as an example,the slip rate,power loss and friction efficiency in the transmission process were theoretically studied,and the temperature field of friction heat generation of roller flat plate was simulated and analyzed with ANSYS software.The results show that the friction power loss increases and the friction efficiency decreases with the increase of the rotating speed and the temperature of the roller and the flat plate.With the increase of the compression force,the sliding speed will increase so as to generate more friction heat.At the same time,the contact area will also increase,and the friction heat area will be larger,so the impact on the temperature rise will be more obvious.The new type of bevel gear roller-flat-disk CVT has high friction efficiency and low friction temperature rise.