Breast lumpectomy is a new surgical technique developed under the influence of breast cancer preservation and other surgical developments, based on the theory of minimally invasive surgery and the maturity of lumpectomy methods. Breast lumpectomy is developed from laparoscopic technology, and various lumpectomies are performed in the laceless breast with the help of both the mature technology of laparoscopic surgery and the special characteristics of breast surgery itself. She integrates the advantages of traditional surgery, lumpectomy and plastic surgery techniques, and is an important advancement in breast surgery technology in recent years. The clinical time results show that breast lumpectomy technique makes significant changes in breast surgery and completely changes the concept and operation method of traditional open surgery. This technology has overcome some of the defects and deficiencies of traditional surgery, significantly improved the surgical treatment of some breast diseases, and solved some of the clinical problems that could not be overcome by conventional surgery. It makes some of the breast diseases take into account the aesthetic appearance of the shape during surgical treatment, and can restore or reconstruct the breast at the same time, with outstanding cosmetic effect, which is a successful practice of using modern surgical theory and technology to solve its own problems.