Breast malignant tumor sarcoma can be treated by surgery, targeted therapy and chemotherapy or radiation therapy. 1. Surgery: Surgery is the first choice for breast malignant tumor sarcoma, and after the surgery, we have to do pathology on the tissues to make clear whether the cancer cells have spread or not and the prognosis. 2. Targeted therapy: it refers to targeted therapy, which has reduced side effects and increased efficacy compared with radiotherapy and chemotherapy, but not all patients are suitable for it and it should be carried out according to the doctor’s instruction. 3. Chemotherapy or radiotherapy: if the cancer cells have spread, or patients who are not suitable for surgery, as well as postoperative adjuvant therapy, chemotherapy or radiotherapy can be adopted. Although radiotherapy and chemotherapy treatments are different, both of them are aimed at destroying the growth and reproduction of the cancer cells, one of them adopts rays, and the other one relies on drugs. When the patient appears breast malignant tumor sarcoma, should promptly seek medical treatment, under the guidance and advice of the doctor according to the specific condition.