PURPOSE: To inspect the existence of a hole easily even if the inter-hole distance is small or the number of holes is large and achieve the manufacture at a low cost through the space saving.

CONSTITUTION: A multispindle drilling inspection device 50 for inspecting the existence of a hole is equipped with an energizing means 17 which has a detecting pin 3 having the smaller sectional surface than each hole 2a, 2b of a transmission case 11 as a work to be inspected at one edge and has the first conductor 26 as electric conductor at the other edge and energizes the detecting pin 3 in the contact direction with the work 11. The multiaxis drilling inspection device is equipped with the second conductor 28 which can be displaced between the first position where the detecting pin 3 is fitted into the hole and the second position where the detecting pin 3 occupies when no hole exists and contacts the first conductor 26 when the detecting pin 3 occupies the first position and forms an electric circuit, and when occupies the second position, the detecting pin 3 contacts the work 11 surface, and the first conductor 26 is separated from the second conductor 28, and nonconductive state. beings the electric circuit into a nonconductive state.