Abstract:Abstract: Breast cancer is one of the most common malignant tumors in women, with the number of new cases increasing every year. The tumor microenvironment controlled by inflammatory cells has been proved to be significantly associated with the progression, metastasis and prognosis of breast cancer. This paper reviewed the advance in the application of peripheral blood inflammatory indexes, such as granulocyte/lymphocyte ratio, platelet/lymphocyte ratio, systemic immune inflammatory index, lymphocyte/monocyte ratio and C-reactive protein in the prediction of the occurrence, progression, prognosis and therapeutic efficacy of breast cancer.