The present invention discloses an axial gap motor that comprises a rotor equipped with permanent magnet pieces and a pair of stators so arranged oppositely to each other as to hold the rotor from the both sides of its rotation axis. The rotor includes magnetic material pieces arranged alternately with the permanent magnet pieces along its circumferential direction. The magnetizing directions of the permanent magnet pieces are parallel to the direction of the rotation axis. Only N-poles of the permanent magnet pieces are opposed to the stators on one side in the direction of the rotation axis, and only S-poles are opposed to the stators on the other side. Each of the magnetic material pieces has a magnetic material piece-penetrating part in the direction parallel to the direction of the rotation axis.