Breast cancer is a common malignant tumor in women. Nowadays, 5-year survival rate is used in medicine to assess the survival of malignant tumors. With the development of medicine, through the continuous exploration of comprehensive treatment of breast malignancies, the 5-year survival has been significantly improved, and now the average survival of breast cancer reaches more than 80%, for early stage breast cancer, the 5-year survival can reach more than 90%; the 5-year survival of middle and late stage breast cancer gradually decreases, but 3%~10% of newly discovered breast cancer already have distant metastasis, even for Even for early-stage breast cancer, 30%-40% of them develop into late-stage breast cancer, and the 5-year survival rate is about 20%. Therefore, for breast cancer, the country carries out screening for both cancers to achieve early detection, early diagnosis and early treatment, hoping to improve the survival rate of breast cancer.