For most breast cancer patients, surgical excision is to remove all the breasts, meaning that one breast is removed completely and the other breast is not removed, and the lymph nodes around the breast are cleared, including the axillary lymph nodes should be completely cleared. If the patient’s breast tumor is very early and the tumor is very small, breast-conserving surgery is considered, in which the breast tissue of the breast tumor is removed and the breast is preserved for stage I breast reconstruction or surgery for stage II breast reconstruction, in which an implant is inserted inside the breast. If the patient’s breast tumor is too advanced to be operated, other treatments, such as targeted therapy, immunotherapy, etc., should be considered.