An X-ray imaging apparatus includes an imaging unit having an imaging unit power feeding mechanism configured to receive electric power from an external device a pedestal including a pedestal power feeding mechanism configured to feed the electric power to the imaging unit and a holder configured to position and hold the imaging unit so that a position of the imaging unit power feeding mechanism coincides with a position of the pedestal power feeding mechanism even if the imaging unit power feeding mechanism is moved with respect to the pedestal power feeding mechanism within a predetermined imaging plane.
