A method for wireless power supply in which power is supplied wirelessly from a power transmission antenna to a power reception antenna, the power transmission antenna including a plurality of power transmission antenna elements, and the power reception antenna including a plurality of power reception antenna elements wherein a power transmission surface of the power transmission antenna and a power reception surface of the power reception antenna are parallel and opposite to each other, and a reflector is provided outside the power reception surface and inwardly inclined at a predetermined angle (θ) with respect to the power reception surface, wherein the method includes a misalignment correction operation prior to a wireless power supply operation, and during the misalignment correction operation, the method comprises: allowing at least two (301, 302), of the plurality of power transmission antenna elements, disposed at periphery of the power transmission surface of the power transmission antenna to function as position-detection power transmission antennas, and allowing antenna elements (401; 404, 405), of the plurality of power transmission antenna elements, disposed inside the position-detection power transmission antennas on the power transmission surface to function as position-detection power reception antennas; radiating an electromagnetic wave from the position-detection power transmission antennas (301, 302) to the power reception antenna; when there is a misalignment between the power transmission surface of power transmission antenna and the power reception surface of power reception antenna, - the electromagnetic wave is reflected by the reflector and the method further comprises the steps of; - receiving the reflected electromagnetic wave by position-detection power reception antennas (401; 404, 405); - converting the received reflected electromagnetic wave into an amount of electric power; - detecting a positional relation, corresponding to a misalignment, between the power transmission antenna and the power reception antenna based on the amount of said electric power; and correcting a relative position between the power transmission antenna and the power reception antenna when a misalignment is detected, by moving at least one of power transmission antenna and power reception antenna so as to correct the misalignment in a direction parallel to the power transmission surface and the power reception surface. allowing at least two (301, 302), of the plurality of power transmission antenna elements, disposed at periphery of the power transmission surface of the power transmission antenna to function as position-detection power transmission antennas, and allowing antenna elements (401; 404, 405), of the plurality of power transmission antenna elements, disposed inside the position-detection power transmission antennas on the power transmission surface to function as position-detection power reception antennas; radiating an electromagnetic wave from the position-detection power transmission antennas (301, 302) to the power reception antenna; when there is a misalignment between the power transmission surface of power transmission antenna and the power reception surface of power reception antenna, - the electromagnetic wave is reflected by the reflector and the method further comprises the steps of; - receiving the reflected electromagnetic wave by position-detection power reception antennas (401; 404, 405); - converting the received reflected electromagnetic wave into an amount of electric power; - detecting a positional relation, corresponding to a misalignment, between the power transmission antenna and the power reception antenna based on the amount of said electric power; and - the electromagnetic wave is reflected by the reflector and the method further comprises the steps of; - receiving the reflected electromagnetic wave by position-detection power reception antennas (401; 404, 405); - converting the received reflected electromagnetic wave into an amount of electric power; - detecting a positional relation, corresponding to a misalignment, between the power transmission antenna and the power reception antenna based on the amount of said electric power; and correcting a relative position between the power transmission antenna and the power reception antenna when a misalignment is detected, by moving at least one of power transmission antenna and power reception antenna so as to correct the misalignment in a direction parallel to the power transmission surface and the power reception surface.