An electric steering wheel lock device includes a control circuit that starts and stops supplying power to a motor that actuates a lock mechanism to lock and unlock a movable member of a vehicle steering mechanism. The control circuit changes contact states of first and second relays to switch a supplying direction of the power. A drive restriction unit stops and starts supplying power to a drive circuit for the motor. The control circuit changes contact states of the first and second relays when the drive restriction unit stops supplying power to the drive circuit.