Breast cancer is usually the condition that requires mastectomy. In early stage breast cancer, after timely mastectomy, the five-year survival rate can reach more than 95%; in intermediate stage breast cancer, after surgical removal, the five-year survival rate can reach about 50-70%; if the patient belongs to the advanced stage of breast cancer, the chance of surgery is usually lost, and the five-year survival rate may be less than 30%. If a patient undergoes standard radical surgery for breast cancer and receives radiotherapy, chemotherapy or targeted therapy after the surgery, the five-year survival rate of the patient can reach more than 95%, and some patients can even survive for a long time and no longer be affected by breast cancer. After surgery, low-fat diet and exercise are recommended. Regular follow-ups are necessary and recommended every six months. The key to how long you can live with breast cancer is whether you follow the doctor’s instructions for standardized treatment and whether you maintain a healthy lifestyle. It is recommended that patients maintain a positive and optimistic mindset and carry out regular treatment in time.