A vehicle door locking device includes a switching portion capable of switching between a first state in which the switching portion makes contact with a door to inhibit the door from moving in an opening direction no less than a distance required for removing an object caught in the door, and a second state in which the movement of the door of no less than the distance is not inhibited. The switching portion has a cam that rotates according to an opening/closing operation of the door. The rotation of the cam by a predetermined angle or more is inhibited in the first state, and the rotation of the cam is allowed in the second state.