The inability to eat in the late stage of cancer may be caused by the obstruction of the esophagus or digestive tract, such as advanced esophageal cancer or advanced gastric cancer, which may lead to the obstruction of eating and inability to eat, and can be treated by placing nutrition tube or gastrostomy, intravenous nutritional support and anti-tumor therapy, as follows: 1. Amino acid infusion can also maintain nutrition; 3. Anti-tumor therapy: further anti-tumor therapy for cancer lesions can also relieve the symptoms of obstruction, and radiotherapy can also enable patients to eat something if they can shrink the tumor. There is also the possibility of a state of malignant fluid in the advanced stage of cancer. The patient itself has no appetite, which is related to the change of hormone secretion level in the body, and there is no too good way. It is possible that the patient is not unable to eat, but really does not want to eat or will have abdominal distension after eating, and can only cooperate with intravenous nutritional support, advanced tumors as far as possible to reduce pain treatment is the main focus.