According to one embodiment, an X-ray imaging apparatus includes an angle acquisition unit and an imaging unit. The angle acquisition unit is configured to acquire an inclined angle of an aorta of an object on a reference image. The imaging unit is configured to display an X-ray image with rotating an angle so as to make a travel direction of the aorta to be a horizontal direction, a vertical direction or a predetermined direction corresponding to a craft. The angle is rotated based on the inclined angle of the aorta.
