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Breast cancer poses a major threat to women's health in China, with its incidence rate continuously rising, leading to an increasing disease burden and an urgent need for novel and effective treatment strategies. In recent years, poly ADP-ribose polymerase (PARP) inhibitors, as a new class of anti-tumor drugs targeting the DNA damage repair pathway, have demonstrated significant efficacy in the treatment of breast cancer with BRCA1/2 mutations. These agents induce a "synthetic lethality" effect by specifically inhibiting DNA repair in tumor cells, offering a new option for precision therapy. Currently, PARP inhibitors such as olaparib and fluzoparib have been approved for clinical use. Based on the latest evidence-based medical data, the Professional Committee on Clinical Research of Oncology Drugs, China Anti-Cancer Association, Expert Committee for Monitoring the Clinical Application of Antitumor Drugs and Breast Cancer Expert Committee of National Cancer Quality Control Center, Cancer Chemotherapy Quality Control Expert Committee of Beijing Cancer Treatment Quality Control and Improvement Center have jointly organized and invited domestic oncology experts with rich diagnosis and treatment experience as well as relevant interdisciplinary experts to compile the "Expert consensus on the clinical application of PARP inhibitors in breast cancer (2025 edition)". This consensus aims to provide guidance on the standardized application and safety management of PARP inhibitors in breast cancer treatment, with the goal of supporting clinical practice.