The invention discloses a copper foil production line. The key points of the design are that the copper foil production line comprises a foil generation region and a grinding region; a cathode rolleris placed on a dual-purpose grinding and foil generation placing device; and the dual-purpose grinding and foil generation placing device can be moved and fixed conveniently. By adopting the copper foil production line disclosed by the invention, the problem that the cathode roller is hard to lift between a grinding process and a foil generation process is solved.