Breast cancer screening has the following examination methods: 1, mammogram, mammogram has a good recognition for breast cancer, breast cancer X-ray shows a lump with increased density, and the border is irregular or burr-like, sometimes you can see the calcification point, the particles are relatively small, dense, which suggests that the possibility of breast cancer is relatively large. Other examinations, such as imaging examination, including breast ultrasound, can be used as the auxiliary examination of mammogram, and both of them are complementary to each other.2. Biopsy and pathology examination, if the patient is more worried about the nature of the breast lump, biopsy and pathology examination can be carried out, and the lump will be excised to do a rapid pathology examination, and if the pathology examination reveals that the lump is breast cancer, basically, it can be determined that the breast cancer is breast cancer; if the results of the pathological examination of the breast cancer come out, the patient will have to do further examination. If the pathological examination shows that it is breast cancer, basically it can be concluded that it is breast cancer.