To simplify a configuration of a non-contact IC medium processor for reading and writing information on a non-contact IC medium and performing the issue processing of the non-contact IC medium and to miniaturize the processor.

A medium carrier passage 12 for rolling a plate-shaped medium Z in a radial direction is provided between a medium charge port 11 and a medium return port 13. A first information processing part 14 is provided near the medium charge port 11 of the medium carrier passage 12 and a second information processing part 15 is provided near the medium return port 13 of the medium carrier passage 12. Price information on the medium Z1 processed by the first information processing part 14 is moved to the second information processing part 15 and replaced by a medium Z2. The medium Z1 whose price information is replaced and remaining sum becomes '0' is accumulated in the medium carrier passage 12.