A wire bonding apparatus includes: a capillary, performing predetermined processing on a workpiece and movable with respect to the workpiece; an optical mechanism, moving together with the capillary; and a controller. The optical mechanism includes: a first imaging unit, acquiring a first image obtained by imaging a standard point set within an imaging range; and a second imaging unit, acquiring a second image obtained by imaging a reference point formed at a predetermined distance from the capillary. The controller positions the capillary with respect to the workpiece based on the first image, and calculates a positioning correction amount of the capillary based on the second image.