Introduction of Mammotome Vacuum Assisted Rotary Cut System: Mammotome is a minimally invasive breast biopsy and treatment technology that has emerged in recent years. The device can enter the breast through a small percutaneous incision under ultrasound guidance and repeatedly cut the lesion with a high-speed rotary cutter, which can obtain a sufficient amount of specimens for biopsy, improve the early diagnosis rate of breast cancer and completely remove smaller benign tumors. It is minimally invasive, accurate, efficient, safe and cosmetic. The advantages of the vacuum-assisted rotary incision system: 1.Small incision: only 3mm skin incision can complete the whole process of biopsy and excision. 2, no suture, no scar wound cosmetic effect. 3, for lesions below 2.5cm can be excised at once, get high accuracy, sufficient amount of specimens, accurate pathological diagnosis. 4.Biopsy can be performed under local anesthesia, with little pain and fast recovery. 5.Postoperative ultrasound and mammogram will not affect the patient, which is convenient for follow-up. The indications of the vacuum-assisted rotary excision system: 1.Nodules of unknown nature in the breast requiring histopathological biopsy. 2.Small benign tumors (such as fibroadenoma) requiring surgical excision. Specially recommended for the following groups: 1, unmarried, infertile, non-lactating women; 2, scar body; 3, those who wish to have better breast appearance; 4, white-collar women with tight schedule and fast pace; 5, early detection of lesions of unknown nature; 6, nodules in the breast, patients with heavy burden of thought.