Breast cancer is currently the tumor with the highest incidence rate 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 modality, which has been used in clinical practice in recent years for the detection of breast cancer and the evaluation of tumor biology. It has higher spatial resolution than conventional whole-body PET/CT and can recognize detailed morphological attributes of radiotracer accumulation within the breast. So far, there are few comprehensive analysis of dbPET at home or abroad. In this paper, we will review dbPET in breast cancer screening, diagnosis, uptake patterns, post-neoadjuvant chemotherapy evaluation and PET tracers in order to have a more systematic understanding of dbPET.