The incidence and mortality rate of cancer is higher among all cancers, and it is also one of the most difficult to treat. Especially in recent years, the incidence rate has a tendency to increase gradually. Due to the high malignancy of pancreatic cancer, surgery does not completely clear the lesion and treatment is based on comprehensive therapy. Chemotherapy is mainly used for pancreatic cancer resected after surgery, which can remove the lesions not removed by surgery and prevent recurrence and metastasis. A scientific and reasonable diet during chemotherapy for pancreatic cancer patients can effectively relieve the symptoms of pancreatic cancer, reduce the pain of chemotherapy and enhance the survival quality of patients. 1. Reasonable diet After the appearance of gastrointestinal reactions, such as loss of appetite, nausea, vomiting or diarrhea, high protein and low fat food can be chosen. The diet should be light and ensure sufficient nutrition. 2, drink more water during chemotherapy to drink more water, chemotherapy patients due to nausea, vomiting, loss of appetite and other side effects, it is easy to cause the body dehydration phenomenon, drink more water to help replenish the body needs to reduce vomiting and other causes of dehydration. 3, drug assistance When there are serious side effects of chemotherapy, such as: bone marrow suppression, kidney function damage, nausea and vomiting aggravation, should take the appropriate drugs to alleviate the condition.