Breast cancer is currently the most common tumor worldwide，and early detection and diagnosis are of great significance for the treatment and prognosis of breast cancer patients. Dedicated breast PET（dbPET）is an emerging molecular imaging device that has been used in clinical practice for the detection of breast cancer and the assessment for tumor biology. It has higher spatial resolution than conventional imaging modalities and can identify detailed morphological patterns of radiotracer uptake within the breast. There have been few comprehensive analysis of dbPET both domestically and internationally. In this paper，we review dbPET in breast cancer screening，diagnosis，uptake patterns，assessment after neoadjuvant chemotherapy，and PET imaging agents to provide a systematic understanding of dbPET.