1. Clinically, if the doctor determines that we may have breast cancer and need surgery, we can do the following procedures: radical surgery, modified radical surgery, breast-conserving surgery, simple mastectomy with sentinel lymph node biopsy, preserved breast with sentinel lymph node biopsy, breast cancer surgery with stage I breast reconstruction (or i.e. reconstructive surgery), stage II breast reconstruction after breast cancer surgery (or delayed reconstructive surgery), and palliative mastectomy or breast lump removal, etc. 2. Radical surgery means cutting off the breast, pectoralis major and minor muscles, and clearing the axillary lymph nodes. At present, radical surgery is seldom used unless the tumor is locally advanced and there is a large extent of invasion of the pectoralis major and minor muscles. 3.Modified radical surgery means removing the breast and clearing the axillary lymph nodes. This is a surgical procedure often used in breast cancer surgery, mainly for patients who are not suitable for breast preservation and whose axillary lymph nodes are clinically diagnosed to have metastasis. 4. Breast-conserving surgery means that for patients who are suitable for breast preservation (I will specifically talk about the condition of breast preservation in another chapter), we do an enlarged tumor excision, do pathological examination of the upper, lower, inner, outer, surface and bottom of the tumor to ensure that the tumor is removed cleanly and the breast is preserved, and add whole breast radiotherapy after surgery. This is the most common surgical method we use now. 5.Breast cancer surgery plus stage I breast reconstruction surgery. For those patients who are not suitable for breast preservation but care about the appearance of the breast, we can perform stage I breast reconstruction at the same time as the radical treatment of breast tumor. The stage I breast reconstruction is divided into implant reconstruction and autologous flap transfer reconstruction, and at present, the stage I implant reconstruction is the main one in China and internationally. 6.Stage II breast reconstruction after breast cancer surgery refers to breast reconstruction surgery several years after breast cancer surgery, mainly based on autologous tissue flap transfer or autologous flap with prosthesis. Autologous flaps are commonly used such as rectus abdominis flap and latissimus dorsi flap. 7. Palliative breast lump or mastectomy is a surgical procedure used for some stage IV breast cancer patients who have distant metastases at the time of discovery, for the purpose of local control and improvement of quality of life. There is also a case for elderly patients who are in poor health and cannot tolerate a larger and more thorough surgery, so they have no choice but to do it. 8. Sentinel lymph node biopsy means that if there are no enlarged lymph nodes in the axilla and the ultrasound examination also indicates no clear signs of metastasis in the axillary lymph nodes, we do not directly perform axillary lymph node dissection during surgery, but inject stain into the skin of the breast or subcutaneously and take a small incision in the axilla to find out all the stained lymph nodes, which we call sentinel lymph nodes, and do pathological examination. If the pathology confirms that there is no metastasis, the axilla is protected from further debridement, which reduces surgical trauma, greatly reduces complications, and protects the function of the affected upper limb. Each patient’s specific condition is different, and each patient’s personal considerations are different, and the type of surgery needed and available is also different. Before surgery, you need to communicate fully with your primary care physician, tell your physician your needs and concerns, listen carefully to your physician’s advice, and have a comprehensive discussion with your family to make a reasonable decision and inform your primary care physician before surgery.