An ultrasonic diagnostic apparatus including a body, a control panel installed on the top of the body, and a height adjusting device to adjust a height of the control panel. The height adjusting device includes an installation bracket for installation of constituent elements of the height adjusting device, a drive motor to generate rotational power, and at least one arm having one end rotatably coupled to the installation bracket and another end rotatably coupled to the control panel. A clutch unit is placed operationally between the drive motor and the arm to selectively cutoff power transmission between the drive motor and the arm. Thus, the height of the control panel is manually adjustable after the clutch unit cuts off power transmission between the drive motor and the arm.