Breast cancer polyinflammatory focal cell infiltration is when a breast cancer patient has an inflammatory cell infiltration around the tumor. Some breast cancer patients may have inflammatory reactions due to the immune system response caused by the cancer cells. When cancer cells lead to blockage of lymphatic vessels or blood vessels, or when breast milk is stagnant due to tumor compression, etc., due to the failure of timely drainage and treatment, it can lead to bacterial and fungal infections, resulting in infiltration of inflammatory cells, such as neutrophils and lymphocytes, which is known as multi-inflammatory cell infiltration in breast cancer. When breast cancer patients have multi-inflammatory foci cell infiltration, they should go to the hospital in time for further examination and treatment under the guidance of professional doctors.