A wire harness production system (31) is provided, as a first system configuration group (36), with a coloring unit (40), a wire terminal collecting unit (57), a selected wire drawing unit (58), a measuring unit (59), a wire cutting unit (60), a terminal cover peeling unit (68), a terminal attaching unit (69), a wire retention rod (62), a unit (61) for setting a wire in a U shape, and a wire retention rod moving unit (63). The wire terminal collecting unit (57) collects each wire terminal (48) of multiple types of wires (44), and holds each of the wire terminals (48). The selected wire drawing unit (58) selects a wire (44) on the basis of the wire type constituting one sub harness, and draws out said wire as a selected wire (64) from the wire terminal collecting unit (57). The drawn-out selected wire (64) is cut to a specified length by the wire cutting unit (60) and becomes a measured/cut wire (65). The measured/cut wire (65) is colored by the coloring unit (40).