A display system and method of a 3-dimensional (3D) ultrasound apparatus is provided. A display system of a 3D ultrasound apparatus includes a first display unit and a second display unit. The first display unit scans a side image of an object in a human body and displays the side image in a first area on a screen. The second display unit scans a top image of the object and displays the top image in a second area different from the first area on the screen.
