A cell manufacturing method in which a main operator, who carries out main operations that include a plurality of steps in which parts are installed on a workpiece, is moved along with the workpiece so as to transit a plurality of stations where auxiliary steps related to the main operations are carried out. At least a portion of operations in which parts and/or jigs are supplied to a main car are carried out via a main delivery apparatus by using a main car on which a workpiece is mounted and on which a main operator rides, and that travels automatically on a predetermined travel route that transits a plurality of stations. The main delivery apparatus has a main serving position and a main receiving position. Parts and/or jigs that have been disposed at the main receiving position are delivered to the main serving position.