A RFID registration system is provided with a reader for reading an ID of an object to be identified by an RFID, an RFID existence position indicating the position of the RFID, and the RFID; an associating apparatus for associating the read RFID with the ID of the object to be identified by the RFID, a position information generation apparatus for obtaining the read position at the same time the position has been read, and a collation apparatus for obtaining an ID of the object to be identified by the RFID based on the read position and the RFID existence position. The RFID registration system can be avoid making the mistaken association between the RFID and the object to which the identification ID is attached.