Abstract: The invention provides an automatic replacement system for automatically and efficiently replacing a bar cutter and a material transfer unit as well as all or part of plural dies and punches attached to a multi-stage press forming machine. The automatic replacement system includes a carrier for conveying tools between a multi-stage press station A including plural dies and punches and tool replacements stations B and C disposed in the vicinity of the press station A; first engagement means for detachable connecting a jig for conveying dies or punches with a material transfer unit; and second engagement means for detachable connecting the carrier with a bar cutter.