The invention discloses a crushing device for raw clay material for ceramics. The crushing device comprises a frame body, an electromagnet block is arranged in the middle of a bottom plate of the frame body, a clay placement bucket is placed on the top surface of the electromagnet block, a limiting sleeve is arranged on the outer side wall of the lower part of the clay placement bucket, a plurality of vertical rods are fixed to the bottom plate and are arranged in the limiting sleeve in an inserted and sleeved mode, a plurality of supporting rods are fixed to the top surface of the bottom plate, the top ends of the supporting rods are fixed to an upper supporting plate, a stamping oil cylinder is fixed to the middle of the upper supporting plate, a push rod of the stamping oil cylinder vertically penetrates through the upper supporting plate downwards and is fixedly provided with a stamping plate, a lower stamping rod is fixed to the middle of the bottom surface of the stamping plate, a conical stamping head is fixed to the bottom end of the lower stamping rod, the lower stamping rod and the conical stamping head are arranged in the clay placement bucket in an inserted and sleeved mode, a reinforcing block is fixed to the bottom surface of the clay placement bucket, and a conical concave hole is formed in the top surface of the reinforcing block and corresponds to the conical stamping head in the vertical direction. The crushing device can be used for crushing a small amount of clay and is simple in structure and convenient to manufacture.