Disclosed is an edgewise wound coil manufacturing device for manufacturing an edgewise wound coil. The edgewise wound coil manufacturing device is provided with: a plurality of corners; a core having a recess formed between each pair of adjacent corners, and around which a flat wire is wrapped; a rotating part that forces the core to rotate around the central axis of the core; guide parts that hold the flat wire therebetween in the thickness direction, while guiding the flat wire in such a manner that the flat wire wraps around the core; a first moving part that forces at least one of the guide parts and the core to move in the approaching/receding direction of the other; and a controller that adjusts the amount that the first moving part moves such that the edgewise wound coil achieves the desired shape.