Sawtooth-shaped slab deburring machine is widely used in removing residual burr on the continuous casting billet after flame cutting. The equipment is installed with special material of sawtooth-shaped scraper, controled by hydraulic motor, and horizontal reciprocating motion to saw cutting the burr. Meanwhile, as the billets moving on the roller bed, the scraper can vertical cutting the burr. By horizontal and vertical combined motion, active and passive resultant action, greatly increase cutting force, enhancing the effect of deburring, and improving working life.