There is provided a high intensity focused ultrasound system, which includes a combination head unit for producing first ultrasound signals for removing a first region to focus and transmit the signals onto the first region, producing second ultrasound signals for forming a 3D ultrasound image of the first region to focus and transmit them onto the first region, receiving ultrasound echo signals reflected from the first region and acquiring image signals for forming an image of a second region, wherein the first and second ultrasound signals penetrate through the second region onto the first region. The system further includes: a high frequency power supply unit, an image processor for forming the 3D ultrasound image and the second region image an operation controller for producing control signals for controlling an operation of the combination head unit an operator for operating the combination head unit based on the control signals and a display unit for displaying the images.
