Abstract: An objective is to provide an electric steering lock device capable of preventing a lock member from being falsely detected as being at an unlock position to unfailingly ensure that an engine is started with a steering wheel being unlocked. In the electric steering lock device, magnetic detection means placed at a position corresponding to an unlock position of the lock member is configured by including a Hall element (north-pole magnetic detection element) configured to be turned on when detecting the north pole of a magnet fixed to the lock member and a Hall element (south-pole magnetic detection element) configured to be turned on when detecting the south pole of the magnet. A microcomputer (control means) determines that the lock member has moved to the unlock position when the Hall elements (north-pole and south-pole magnetic detection elements) are both turned on, and then stops driving an electric motor (electric actuator).