The utility model discloses a grind shoe for drilling and grinding a ball valve. The grind shoe for drilling and grinding the ball valve comprises a body, wherein a through hole is formed in the middle of the body, a steel ball can pass through the through hole, one end of the body is connected with a drilling tool in a threaded mode, and a layer of alloy is welded to the end face of the other end of the body in a laying mode. The grind shoe for drilling and grinding the ball valve has the advantages that when the ball valve is drilled and ground, drilling and grinding carried out on the steel ball with high hardness and high roundness can be avoided, an aluminum ball seat is drilled and ground instead, and efficiency is quite high.