Patients who have a mammogram and find calcified lesions in the breast should be alerted to the occurrence of breast cancer. Usually, breast cancer patients will not only have a lump in the breast, but also calcium deposits will form within the lump, forming calcified foci, which are usually small and accumulate in clusters. It is important to note that at this time, it is best for the patient to undergo timely excision of the breast lump, which must be done together with the calcified spots of the breast, and then a pathological examination is done to clarify the diagnosis. If the patient is diagnosed with breast cancer, a modified radical mastectomy should be performed, and after the surgery, a comprehensive treatment such as chemotherapy and radiotherapy should be decided according to the patient’s pathology. Mammogram is very accurate for the diagnosis of calcification. As long as there are calcified spots on the mammogram, patients should be highly alert to the occurrence of breast cancer in order to facilitate early detection of breast cancer.