A circuit-substrate-related-operation performing apparatus for performing a circuit-substrate-related operation which is an operation on a circuit substrate, including: a plurality of heads including at least one work head and at least one detection head; a head holding device configured to hold, at a holding portion thereof, one of the plurality of heads; a moving device configured to move the head holding device; a head stock device in which the plurality of heads are stocked; and a controller configured to control the circuit-substrate-related-operation performing apparatus, wherein the controller includes a head attachment control portion configured to control the moving device and the head holding device such that the head holding device is moved to a set position which is set with respect to the head stock device and such that an arbitrary one of the plurality of heads is held by the head holding device.