1.What are the common surgical treatment methods for breast cancer? Since Halsteds pioneered radical breast cancer surgery in 1984, the history of breast cancer surgery has undergone a spiral from small to large and from large to small over the past 100 years. As the first treatment for breast cancer, the choice of the procedure and the standardization of the surgery directly affect the further treatment strategy and prognosis of patients. Today’s breast cancer surgery is more mature, rational and standardized. The generalized approach of radical resection regardless of the stage of the disease and the patient’s psychological needs is gradually replaced by individualized treatment according to the patient’s stage of the disease and the requirements of the patient’s spiritual life. 2.Breast Preservation Surgery With the advancement of breast research and the improvement of radiotherapy equipment and technology, breast preservation surgery has become a reality. This procedure is suitable for tumors that are small (less than 4 cm in diameter) and not located in the central region, with good histological grading. Only the tumor itself and the surrounding breast tissue and fat tissue are removed, or a quadrant of the breast is excised, followed by ipsilateral axillary lymph node dissection. After surgery, strict radiotherapy and chemotherapy will be administered according to the pathology. Currently, clinical work without axillary lymph node dissection is being carried out in foreign countries, and this work is also carried out in our department for patients with negative axillary lymph nodes with the consent of the patient. The breast preservation surgery with the treatment without axillary lymph node dissection will bring patients less complications, less pain, shorter operation time and near perfect appearance. 3.Surgery to preserve nipple and areola This procedure is suitable for stage I and II breast cancer with small tumor, 2.5 cm from the edge of areola and the tumor is diffuse in the whole gland that cannot be operated to preserve the breast. The tumor, all the breast tissue and some subcutaneous fat and skin are removed, and the whole axillary lymph nodes are cleared on the same side, and stage I or II breast implants or autologous breast reconstruction is performed according to the patient’s requirements.