PURPOSE: To provide an automatic photographic processing apparatus capable of stocking a plurality of cartridges and enabled in long-term unmanned operation by the successive replacement and supply of the cartridges.

CONSTITUTION: A printer part 2 forming an image on paper, a cartridge supply part 3 capable of housing a plurality of cartridges to successively feed them to a predetermined position, a feed unit part 5 equipped with a cartridge attaching and detaching chuck part 4 and taking out the used cartridge from the printer part 2 or taking out the cartridge from the cartridge supply part 3 to feed the same to the printer part 2 and a paper supply part 6 feeding and supplying roll paper automatically are arranged at predetermined positions.