This round X-ray apparatus (1) includes an X-ray generator (6) that can be moved up and down in the vertical direction, and a compression spring (22a, 22b) or a tension spring (222) that expands and contracts as the X-ray generator is moved up and down. The wire (20) that transmits the elastic force of the compression spring or the tension spring to the X-ray generation unit and the pulley (21) that is wound around the wire and rotates are held, and the X-ray generation unit A holding frame (10) that supports the frame so as to be movable up and down, and a holding frame that is detachable and accommodated so as to be exposed upward, and a column (3) that extends in the vertical direction.
