PURPOSE: To provide an inspecting device of drill cutting edge in which a lateral difference in form of the cutting edge of a drill, even if it has any angle, can be easily inspected with the shaft center of the drill as a top by any person unskilled for drill polishing so as to bisymmetrically polish the cutting edge of the drill.

CONSTITUTION: An inspecting device of drill cutting edge 10 has a shaft center detecting guide 11 provided with a valley part 15 formed by opposed inclined surfaces, and paired contact members 12 provided on one side of the shaft center detecting guide 11 and raised in such a manner as to be capable of opening and closing at equal angles with a point or line on the shaft center surface of a drill 26 placed on the valley part 15 as a top.