To provide an IC coin processing device suitably built in a game medium dispenser or the like because of a miniaturized structure while ensuring capacity for storing IC coins.

The IC coin processing device for carrying out data processing such as recording/reproducing, storing, issuing and recovering IC coins has an IC coin stock way 120 formed along the turning locus of a turning-controlled arm member 162, and a support pin 161 provided at the tip of the arm member and projected into the stock way. The IC coins are stored piled up in the stock way, and the lowermost IC coin is supported by the support pin and moved up and down at the same time to convey the IC coin for processing such as storage/recovery.