70-year-old people belong to the elderly, for 70-year-old people chemotherapy and no chemotherapy have advantages but also certain disadvantages, whether it is suitable for chemotherapy, need to be based on the patient’s wishes, the patient’s specific type of disease, the patient’s physical condition and the advice of professional doctors to make a comprehensive assessment to decide. I. Chemotherapy: 1. Advantages: Chemotherapy can be carried out if the physical condition is still acceptable, the liver and kidney function is good, and there are no contraindications to chemotherapy. Chemotherapy can help control the spread and proliferation of tumor, control the continued development of the disease, reduce the pain suffered by the patient’s body, and may prolong the survival time at the same time. 2. Disadvantages: Chemotherapy has certain side effects, the milder ones have adverse reactions in the digestive tract, such as malignancy, vomiting, loss of appetite, etc. The more serious ones may have bone marrow suppression, causing a decrease in white blood cells and platelets, resulting in severe anemia. In some patients, chemotherapy may cause aggravation of the disease, and even the side effects can be seriously life-threatening. In addition, chemotherapy will have a certain impact on other drug treatments. 2. No chemotherapy: 1. Advantages: the advantages of no chemotherapy are mainly to avoid the side effects brought by chemotherapy, especially for 70-year-old people whose body condition is not suitable for chemotherapy, no chemotherapy can reduce the additional damage to the body; 2. Disadvantages: 70-year-old people who are suitable for chemotherapy do not have active chemotherapy, the tumor tissue may continue to spread and metastasize to other tissues and organs, aggravating the disease. In addition, if 70-year-old elderly have low physical quality, low liver and kidney function, unable to bear the side effects impact brought by chemotherapy, have other diseases that are not suitable for chemotherapy, etc., in this case, try not to choose chemotherapy, if it is necessary, then it is recommended to consider single drug chemotherapy, not recommended to combine chemotherapy, or can choose other treatments instead, such as radiation therapy, immunosuppressive therapy, etc.