The invention discloses an active carbon crushing device. The active carbon crushing device comprises a main body part and a base frame fixedly mounted in the main body part, wherein support pillars are fixedly mounted at the periphery of the end surface of the bottom of the base frame; a height adjusting rod is movably mounted at the bottom of each support pillar; a bottom plate is fixedly mounted at the bottom of each height adjusting rod; a rotation driving cavity is formed in the base frame; a particle processing device is arranged inside the base frame on the left side of the rotation driving cavity and comprises a first sliding cavity arranged in the base frame and a sliding block arranged in the first sliding cavity through a horizontal sliding fit connection manner; a first channelpassing through the end surface of the bottom of the base frame is formed in the inner bottom wall of the left side of the first sliding cavity and is in transition fit connection with a crushing armwhich expands upwards. The active carbon crushing device is simple in structure and convenient to operate; the labor intensity of workers is alleviated; the construction efficiency is improved; the construction progress of processing of the active carbon is greatly slowed.