The five-year survival rate of breast cancer patients after six rounds of chemotherapy correlates with the specific stage. Breast cancer is a common malignant tumor in women, caused by heredity, hormone level and other factors. Chemotherapy is one of the important treatments for breast cancer, and commonly used chemotherapeutic drugs for breast cancer include cyclophosphamide, 5-fluorouracil and so on. Six times of chemotherapy is mostly used as postoperative adjuvant chemotherapy, which can be used for patients with stage I to III breast cancer. Therefore, the clinical cure rate varies slightly in different stages. For stage I patients, the five-year survival rate after treatment is about 95%; for stage II, it is about 90%; and for stage III, the five-year survival rate will further decrease. In general, the earlier the stage, the better the prognosis.