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To improve torque load capacity and extend the application scope of current continuous variable transmissions (CVT), a kind of bi-metal belts CVT was designed. The transmission principle of kinematics and dynamics and transmission efficiency of the proposed CVT was derived. Mathematical model of the CVT hydraulic system was deduced and stability of the model was analyzed. The bi-metal belts CVT was simulated by AMEsim and the PID controller parameters were adjusted. The results showed that the proposed CVT could solve ratio synchronous control problem and had good ratio tracking accuracy. The bi-metal belts CVT could double the torque load capacity in contrast to typical CVT on the same clamping fore condition. Feasibility of the proposed CVT was verified preliminary.