To provide an RFID card container which contains a plurality of RFID tags and starts only one desired RFID tag to be read while inhibiting other RFIDs to be read when a magnetic field is applied from an RFID reader.

The RFID card container and the RFID communication auxiliary sheet are manufactured by using a plate-like member having a magnetic layer, a conductor layer and a gap layer. In the RFID card container and the communication auxiliary sheet, the plate-like member is used to be arranged between a first RFID tag and a second RFID tag. When a magnetic field is applied from the RFID reader positioned at the side of the first RFID tag, the first RFID tag is powered and a reply is sent to the RFID reader. Since the second RFID tag is not powered due to demagnetizing field generated by eddy currents generated at the conductor layer, a reply is not sent.