A tag manufacturing system includes an antenna forming apparatus which forms multiple antennas in such a way that the antennas are formed in a point-symmetrical arrangement including antenna orientations, on a long base sheet large enough to place multiple bases, and winds the base sheet into a roll body; an IC chip mounting apparatus which pulls the base sheet out of the roll body, mounts an IC chip on each of the antennas formed on the pulled base sheet in an orientation corresponding to an orientation of each antenna, and electrically connects the IC chip with the antenna; and a post-processing apparatus which performs post-processing of the base sheet with the IC chips mounted on the antennas to work up the base sheet into finished RFID tags.