The symptoms of early-stage breast cancer mainly include breast lumps, abnormal nipple discharge, and changes in breast skin. Breast cancer is a common type of malignant tumor among women in China, with adenocarcinoma being the most common pathological type, although other types can also be seen clinically. Patients exhibiting abnormal breast lumps, abnormal nipple discharge, and changes in breast skin should consider the possibility of breast cancer. Patients suspected of having breast cancer should undergo breast imaging tests, including mammography and breast MRI, among others. Patients in whom abnormal breast masses are found during imaging tests can obtain a definitive diagnosis by surgical removal or percutaneous biopsy. Patients diagnosed with breast cancer should undergo surgical treatment as soon as possible.