To provide a cutting edge grinding machine for a drill capable of easily grinding the cutting edge of a twist drill for heavy cutting with 30-40% of web thickness, only by setting it.

In this cutting edge grinding machine for the drill, a wheel for grinding the cutting edge of the drill is a tapered wheel made of CBN with approximately 60° and 120° at both end angles, and a tapered face and an angular part of 120° are used for grinding. A cutting edge holder of the drill is mounted for holding the cutting edge of the drill to press it to the wheel at a predetermined angle and with predetermined motion.