The invention relates to the technical field of mechanical equipment, in particular to a chip remover for a ball-center reverse-flow valve, and the chip remover clears broken chips adhered on the valve, can effectively improve working efficiency, effectively improves chip removal effect after the valve is subjected to chip removal and burrs are not liable to leave on the valve, precisely controlsa downward movement position of a ring-shaped scraping knife, accurately controls scraping-off amount, on the edge of a circular hole in the valve, of the bottom end of the ring-shaped scraping knife,effectively improves product quality and improves practicability and reliability. The chip remover comprises a base, a first bracket, a supporting box, a second bracket, a first motor, a first transmission shaft, a speed reducer, a second transmission shaft, a first bevel gear, a second bevel gear, a third transmission shaft, a first supporting plate and a lead screw, wherein the left side and the right side of the bottom end of the first bracket are separately mounted at the left side and the right side of the top end of the base; and the bottom end of the supporting box is mounted on the middle part of the top end of the first bracket.