Sore throat during chemotherapy for breast cancer may be caused by mucositis, pharyngitis and other diseases, which can be treated with drugs including Niu Huang Xie Du Wei Tablet according to the specific conditions. Sore throat during chemotherapy for breast cancer may be caused by mucositis and pharyngitis during chemotherapy, and the inflammatory reaction caused by the decrease of white blood cell count, which needs to be treated with drugs. The effect of Niu Huang Xie Toxin Relieving Tablets has the effect of relieving symptoms such as sore throat, and it has certain relief effect on the occurrence of mucositis, pharyngitis, etc. during chemotherapy. Breast cancer chemotherapy can use compound cyclophosphamide tablets, capecitabine tablets and other drugs to treat, need to eat a light diet, monitor the number of white blood cells, pay attention to supplemental nutrition. Patients with sore throat can be treated with oxalic acid detoxification tablets, but the period of breast cancer chemotherapy is a special period, patients should take it appropriately according to their own situation under the advice of doctors.