A permanent electromagnetic lock is provided with a frame and a fan matched with the frame; the frame and the fan are respectively provided with a permanent magnet and an electric magnet. The iron core end part of the electric magnet is corresponding to the pole of the permanent magnet. The frame and the fan are locked by utilizing the suction of the permanent magnet to the electric magnet without using electricity. The electric magnet is briefly electrified; the direction of the magnetic field of the electric magnet is opposite to the direction of the magnetic field of the permanent magnet to generate a repulsive force and release the closing state of a magnetic lock. The pole end of the permanent magnet is better to be connected with an iron extending block; the iron core end part of the electric magnet is correspondingly sucked with the iron extending block at the pole end of the permanent magnet. The permanent magnet or the pole end thereof is connected with the iron extending block which is loosely connected with the frame or the fan or the permanent magnet or the pole end thereof is connected with the iron extending block; a soft cushion or an elastic cushion is clamped between the permanent magnet and the frame or the fan or between the pole end and the frame or the fan so as to ensure the suction pieces to be fully contacted and enhance the suction force.