Conclusion: Postoperative patients should decide what kind of diet to use according to their illness and intraoperative conditions. Generally speaking, the physiological needs of the body are maintained by fasting water, peripheral vein nutrition and central vein nutrition within three days after operation. After exhaustion, you can eat some oil-free liquid foods such as rice soup, fruit water or vegetable juice to stimulate the gastrointestinal tract. After the gastrointestinal tract gradually adapts, it will be changed to low-fat semi-liquid or low-fat general food according to the condition. Experts explained that pancreatic cancer is one of the more common malignant tumors, and the incidence and mortality have increased significantly in recent years. At present, the cause of pancreatic cancer is not clear, but some studies have found that environmental pollution and changes in diet structure have an impact. Reasonable diet plays an important auxiliary role in the treatment of pancreatic cancer. Patients with early pancreatic cancer may have symptoms of upper digestive tract diseases, such as nausea, anorexia, aversion to oil, fatty diarrhea and other undigested symptoms. Symptoms get worse when eating a high-fat and high-protein diet. When pancreatic cancer is undiagnosed and the above symptoms appear, we should be vigilant and treat it as soon as possible. If you are diagnosed with pancreatic cancer, you should pay attention to your diet. Eat regularly, 3 ~ 5 meals a day, and don't eat snacks all the time, which will cause the pancreas to continuously secrete pancreatic juice and increase the burden of pancreatic function. Diet should be reasonably matched, and the proportion of carbohydrate, fat and protein should be paid attention to, with carbohydrate as the main ingredient and the amount of fat and protein appropriate. If you want to eat digestible protein, such as lean meat, eggs, fish, etc., you should adopt reasonable cooking methods, mainly by boiling, stewing, boiling, steaming, sliding and frying, instead of frying, frying and frying, to prevent excessive secretion of pancreas. After the operation, the patient should decide what kind of diet to use according to the condition and intraoperative situation. Generally speaking, the physiological needs of the body are maintained by fasting water, peripheral vein nutrition and central vein nutrition within three days after operation. After exhaustion, you can eat some oil-free liquid foods such as rice soup, fruit water or vegetable juice to stimulate the gastrointestinal tract. After the gastrointestinal tract gradually adapts, it will be changed to low-fat semi-liquid or low-fat general food according to the condition.