As people become more concerned about their health status, regular medical checkups have become a staple in many people’s daily lives. Due to the rising incidence of breast diseases, regular breast examinations are not to be ignored for women. Patients often ask whether it is okay to perform only palpation, ultrasound or mammography during medical checkups, but from a medical point of view, it is not comprehensive to perform only one examination. Any medical consultation process includes three parts, namely, consultation, physical examination, and auxiliary examination. Simply put, the process of consultation is to understand the subjective feelings of the patient and to grasp the basis for diagnosis of the disease from the process of conversation; in addition, at the first visit, a clear diagnosis is not obtained, so the basis for differential diagnosis must also be grasped in the process of consultation. The physician must not only judge the disease from the subjective feelings of the patient, but also conduct a physical examination to clarify the objectivity of the subjective feelings of the patient, which is the palpation mentioned above. Palpation is a targeted and logical examination of the body based on the patient’s complaints, in order to detect the disease and confirm the diagnosis, and also to make a differential diagnosis during the examination. Although the patient is examined by questioning and palpation, the diagnosis cannot be fully confirmed, and even the most meticulous logical thinking may have oversights. Therefore, relevant ancillary tests are needed to clarify the diagnosis. In the case of breast disease, ultrasound and mammography are two important tools. Ultrasound is the initial imaging examination for breast cancer screening, focusing on the size of the lesion, whether the boundary is clear, whether the shape is regular, whether there is blood flow, whether there is calcification and the size of axillary lymph nodes; while mammography is the further imaging examination for breast cancer screening, focusing more on the location of the lesion in the breast, the shape of calcification, the relationship between the lesion and the pectoralis major muscle, whether there are changes in the skin and the location of axillary lymph nodes. Lymph node location, etc. The two imaging methods have different roles and focus, and generally cannot be substituted for each other. Therefore, it is necessary to choose the examination items according to the patient’s specific conditions such as age, menstruation and physical examination.