The number of chemotherapy treatments is 6, which is not necessarily an advanced stage of cancer, but can also be early or intermediate stage, which is related to the specific disease and the treatment plan and other factors. Cancer is a malignant disease caused by heredity, environment and other factors, and chemotherapy is one of the main treatments, which usually refers to the purpose of killing cancer cells by intravenous infusion of chemotherapy drugs. The number of postoperative neoadjuvant chemotherapy is usually 6~8 times, which can be used for the treatment of any stage of cancer in early, middle and late stages. In addition, the method of determining the specific stage of cancer is not based on the number of chemotherapy treatments, but rather on the clinical staging of the primary tumor, the degree of lymph node metastasis, and whether distant metastasis has occurred. Chemotherapy should be carried out reasonably under the guidance of specialized physicians.