An electric vehicle charging port control device being provided with: a charging port , comprising a passive-engagement part with which an active-engagement part of a charging connector engages as the result of an operation performed by a user, the charging port supplying power from an external power source when an engaged state is assumed; a locking mechanism that, when the active-engagement part and the passive-engagement part are in an engaged state, yields a locked state in which disengagement is restricted by the movement of a restricting member in a locking direction, thereby preventing release of the active-engagement part , and yields an unlocked state in which release is permitted by the moving of the restricting member in an unlocking direction opposite the locking direction; a controller that energizingly drives the restricting member using a motor so that the restricting member moves to a position before the predetermined position when the restricting member is being moved to the predetermined position for yielding the locked state or the unlocked state; characterized in that : a toggle spring connected to the restricting member ; the restricting member being biased towards the predetermined position, from the position before the predetermined position, by an elastic force of the toggle spring after being energizingly driven to the position in front of the predetermined position by the motor when the restricting member is being moved to the predetermined position; and the controller moves the restricting member in the locking direction, then in the unlocking direction in a continuous action, before the active-engagement part and the passive-engagement part engage. a charging port , comprising a passive-engagement part with which an active-engagement part of a charging connector engages as the result of an operation performed by a user, the charging port supplying power from an external power source when an engaged state is assumed; a locking mechanism that, when the active-engagement part and the passive-engagement part are in an engaged state, yields a locked state in which disengagement is restricted by the movement of a restricting member in a locking direction, thereby preventing release of the active-engagement part , and yields an unlocked state in which release is permitted by the moving of the restricting member in an unlocking direction opposite the locking direction; a controller that energizingly drives the restricting member using a motor so that the restricting member moves to a position before the predetermined position when the restricting member is being moved to the predetermined position for yielding the locked state or the unlocked state; characterized in that : a toggle spring connected to the restricting member ; the restricting member being biased towards the predetermined position, from the position before the predetermined position, by an elastic force of the toggle spring after being energizingly driven to the position in front of the predetermined position by the motor when the restricting member is being moved to the predetermined position; and the controller moves the restricting member in the locking direction, then in the unlocking direction in a continuous action, before the active-engagement part and the passive-engagement part engage. a toggle spring connected to the restricting member ; the restricting member being biased towards the predetermined position, from the position before the predetermined position, by an elastic force of the toggle spring after being energizingly driven to the position in front of the predetermined position by the motor when the restricting member is being moved to the predetermined position; and the controller moves the restricting member in the locking direction, then in the unlocking direction in a continuous action, before the active-engagement part and the passive-engagement part engage. <EOS>