Abstract: Polycrystalline cubic boron nitride blade containing 80vol% cubic boron nitride was prepared with Al-Ti compound as binder. The microstructure, hardness, wear and cutting performance of the blade were studied and compared with those of the similar products. The results show that the microhardness of the prepared blade reached 3 127 HV. The microstructure distributed homogeneously. The wear height of the flank face was 0.28 mm, which was about the same as that of the similar products. The impact resistance number without chipping in interrupted cutting reached 32 000 times, which was better than that of the similar products. The number of rollers cut by the blade in roughing processing was 23% higher and the single-edged cutting stroke in finishing processing was 17% higher than those by the similar products.