The utility model relates to a cyclone dust collector which comprises a turbo-fan and a dedusting tank internally provided with a dedusting mechanism. An air outlet communicated with the turbo-fan is arranged at the top of the dedusting tank through a pipeline, and an air inlet is arranged in the middle of the dedusting tank. The dedusting mechanism consists of a vibrating frame, a vibrating motor fixed at the top of the vibrating frame and a plurality of filter bags installed inside the vibrating frame and communicated with the air inlet, an ash collecting hopper at the bottom of the dedusting tank, an ash discharge pipe extending downwards is arranged at the bottom end of the ash collecting hopper. A flap valve is arranged at the ash discharge pipe. The cyclone dust collector is capable of dedusting air to purify air and has the advantages of environmental protection and sanitation. Furthermore, according to the device, the energy source can be saved, the waste gas is recycled, and not only is the cost lowered, and the efficiency of production and operation is improved, but also the cyclone dust collector has the advantages of convenient and rapid maintenance and low maintenance rate.