Tumor stage is not defined based on the course of chemotherapy. Chemotherapy up to 6-8 times cannot determine the specific stage of cancer, but it generally indicates that the cancer has reached the middle or late stage. In the treatment of cancer, chemotherapy is a common treatment modality. Patients are treated by chemical drugs, and there are different chemotherapy courses for different cancer types and stages. The consolidation chemotherapy after surgical removal of tumor usually takes 4-6 times, and the number of chemotherapy for patients with recurrence or advanced stage is determined by the effect of chemotherapy, usually 6 times or more. Therefore, the specific stage of cancer cannot be determined by the number of chemotherapy sessions and needs to be determined by the doctor according to the patient’s specific condition. Patients are advised not to think too much during chemotherapy, and must maintain an optimistic and positive attitude and fully cooperate with the doctor’s treatment in order to improve the disease, improve the quality of life and prolong the survival time.