The multi-wedge belt has both the soft and strong characteristics of the flat belt and the compact and high efficiency of v-belt. The multi-wedge belt transmission power is large, and the space phase is 30% higher than that of ordinary V belt. The multi-wedge belt transmission system has a compact structure, and in the same transmission power, the transfer device takes up 25% less space than the ordinary V belt. The multi-wedge belt is thin and flexible, and ADAPTS to the transmission with small diameter of the belt wheel. It also ADAPTS to high-speed transmission with a speed of 40m/s. Small vibration, less heat, smooth operation. The multi-wedge belt is heat resistant, oil resistant and wear-resistant, with small elongation and long life.