Ultrasound ablation therapy is also known as high-intensity focused ultrasound therapy, the latter in English is high intensity focused ultrasound, so it is also called HIFU treatment at home and abroad, and some manufacturers are called “sea knife” treatment. The basic principle is that under the guidance and monitoring of modern medical imaging, the ultrasound is focused from outside the body to the target tissue in the body ready for treatment, forming a high intensity but small focal point in the target area, due to the high intensity of this focal point, the high temperature can be generated in a short period of time, so that the tissue in this small point coagulation necrosis, and because the focal point is small, the tissue around the focal point by the Because the focal point is small, the tissue around the focal point is less affected by the focal point and is relatively safe. When treating a larger lesion, the doctor controls the movement of the focal point in vivo through the monitoring of the image, and by inactivating the tissue of the lesion little by little, eventually achieving the purpose of inactivating the large lesion. Just as we usually use a magnifying glass to focus the sunlight and can light a match at the focal point, ultrasound ablation treatment is to focus the ultrasound, which is usually safe for the human body, from outside the body to the body and play a therapeutic role.