Now a new concept is being used to guide the standardized treatment of breast cancer The new concept that breast cancer is a systemic disease has replaced the old concept that breast cancer is a localized disease. Zhou Wenjun of the Breast Department of Siping Central Hospital has become the best treatment model for breast cancer by combining local and systemic treatment. The treatment of breast cancer has been transformed from the “maximum tolerable treatment” to the “minimum effective treatment”. The use of individualized comprehensive treatment: breast-conserving surgery and axillary-conserving treatment, without affecting the survival rate and recurrence rate, reduces the scope of surgery, changes the shape of the body, maintains the function of the upper limbs and improves the quality of life. Breast-conserving surgery surgical treatment remains the main treatment modality for breast cancer. For more than a century, breast cancer surgery has undergone a transformation from small to large and then to small again. After the 1980s, due to the in-depth research on the biological characteristics of breast cancer, it was once again recognized that the main reason for treatment failure was hematogenous metastasis, and at the same time, with the improvement of early diagnosis level and the development of systemic comprehensive treatment, the principles of previous tumor treatment were changed, and more emphasis was placed on preserving and improving the patient’s Therefore, postoperative plastic surgery and breast preservation have been carried out. Among them, the Milan trial (hosted by the National Cancer Institute of Milan), the NSABPB-6 trial and the EoRTCl0801 trial (European Organization for Research and Treatment of Cancer) have shown that breast-conserving surgery can achieve the same survival rate as radical surgery as long as the indications are strictly controlled and the treatment plan is standardized. The EoRTCl0801 trial and the EoRTCl0801 trial (European Organization for Research and Treatment of Cancer) have shown that with strict indications and standardized treatment plans, breast-conserving surgery can achieve the same survival rates as radical surgery and that patients’ quality of life is greatly improved. The biopsy of sentinel lymph node is the first lymph node that receives local lymphatic flow, and the metastasis of this lymph node indicates that the regional lymph nodes are involved. Therefore, the biopsy of the anterior lymph nodes can be used to predict whether the lymph nodes in the axilla are metastatic or not.