The present invention provides an ultrasonograph excellent in operability and mobility by: compactly containing an operation panel on an upper face of a housing in the operation of a standing posture or a moving operation and positioning the operation panel in front in the operation of a sitting posture.The ultrasonograph contains a main body housing 100 having transfer wheels 101, an operation device 200 having operation switches 400, and a movable arm 300 to connect the main body housing 100 to the operation device 200 the main body housing 100 has an inclined plane 103 inclining rearward from a front face to an upper face and the movable arm 300 movably supports the operation device 200 through an elevating function mechanical section 301 to move the operation device 200 by using an upper position on the inclined plane 103 as a moving path so as to, in the state of maintaining the posture of the operation device 200, take a second posture Q2 wherein at least a part thereof hangs over the main body housing 100 at a lower position on the inclined plane 103 from a first posture Q1 wherein the operation device 200 is contained within the projected area of the main body housing 100 at an upper position on the inclined plane 103.
