An image acquisition system for wire group processing is a system for recognizing the wire group constituting the wire harness. This image acquisition system includes a first vision system (e.g. a two-dimensional vision system) that acquires first image data for recognizing the wire group constituting the wire harness in a first imaging range, and a second vision system (e.g. a three-dimensional vision system) that acquires second image data for recognizing the wire group constituting the wire harness in a second imaging range which is within a region that overlaps with the first imaging range and is smaller than the first imaging range, the second image data having a greater amount of information per unit of area than that of the first image data.