Breast cancer surgery is based on modified radical surgery, which usually removes all of the unilateral breast, and at the same time clears the axillary lymph nodes, that is, removes the tumor. The upper boundary of the range should be cut to the subclavian bone, the middle to the parietal sternum, the lower boundary to the pectoralis major muscle, and the outer to the anterior edge of the latissimus dorsi muscle, meanwhile all the lymph nodes that may have tumor metastasis are removed, including the fat tissues, and the main range is between the pectoralis major muscle and the pectoralis minor muscle, meanwhile including the axilla downwards. Breast cancer patients if after surgery, pathology staging do chemotherapy, immunohistochemistry results, endocrine therapy, etc. are better, some patients can do targeted therapy, the overall effect is good.