1.What are the advantages of ultrasound focused knife compared with traditional warm therapy? 1) HIFU surgical technology is suitable for treating both superficial tissues and deep tissues in the body; 2) high sound intensity and short single irradiation time; 3) high precision; 4) little influence by and on large blood vessels; 5) can be treated individually; 6) not limited by tumor size and shape; 7) thorough treatment with little side effects. 2. What is the relationship between ultrasound focused knife and traditional surgical treatment techniques? 1) HIFU surgery has the characteristics of no incision and no bleeding, and is a new technology of non-invasive surgery, which can not only provide radical treatment for early and middle stage lesions, but also palliative treatment for locally advanced lesions, thus effectively reducing the tumor load. (2) HIFU can also repeat treatment and segmental treatment, creating surgical treatment opportunities for more patients. (3) HIFU surgery also has the advantages of limb preservation and cosmetic treatment. Therefore, HIFU can be used as an effective supplement to traditional surgical procedures. (4) HIFU treatment can be used as a pre-treatment for surgery. For tumors with rich blood supply, surgical resection in one stage may cause heavy bleeding and intraoperative extrusion of tumor causing metastasis of tumor cells, HIFU treatment cures and necroses the tumor, reduces bleeding during surgical resection and greatly reduces the possibility of metastasis caused during surgery.