Calcification of breast nodules is an important basis for the diagnosis of breast cancer and is a relatively common condition in breast examinations, not all calcifications are diagnostic of breast cancer. The causes of breast calcification include tissue degeneration, necrotic calcium deposition, and tumor secretion of calcium salts. In benign calcification, the calcification particles are coarser, the number of calcification particles is smaller, and the distribution is scattered and limited, so it is necessary to determine the nature of the lump based on ultrasound and mammogram. In the case of malignant tumors, the calcification is fine, mud-like or pinpoint, appearing in clusters or in a forked shape, with irregularly shaped lumps on palpation, with unsmooth edges and poor mobility, and the lumps are found to be accompanied by calcification on mammography.