There is no such thing as living only 5 years with breast cancer. Breast cancer is a phenomenon of uncontrolled proliferation of breast epithelial cells under the effect of various carcinogenic factors. In the early stage of the disease, the symptoms are usually breast lumps, nipple overflow and enlarged axillary lymph nodes. Breast cancer is often referred to as the pink killer, and its incidence ranks first among female malignant tumors, while male breast cancer is less common. With the improvement of medical treatment, breast cancer has become one of the solid tumors with the best curative effect. The prognosis of breast cancer is closely related to the stage of development of the disease. The earlier the disease is detected, the better the chances of survival of patients within 5 years. The 5-year relative survival rate of breast cancer patients is 89.9%, including 98.8% for in situ cancer, 85.5% for early invasive cancer, and only 27.4% for invasive cancer with distant metastasis, and with timely detection and early treatment, some breast cancers can be cured.