Enteral nutrition is a form of nutritional support that provides metabolically required nutrients and various other nutrients via the gastrointestinal tract. Nutritional therapy is the material basis for the patient’s recovery. Enteral nutrition provides patients with daily requirements of protein, lipids, carbohydrates, vitamins, mineral elements, trace elements and dietary fiber in the most physiological way, providing comprehensive and balanced nutritional support and energy support to protect intestinal function and promote patients’ recovery. The advantages of enteral nutrition include: 1. 2.Protect the function of intestinal barrier and promote portal blood circulation. 3.Improve hepatobiliary function and facilitate liver protein synthesis and metabolism. 4.Reduce the occurrence of gastrointestinal complications and improve the immune function of the body. 5.Effectively shorten the recovery time of gastrointestinal function of postoperative patients and shorten the hospitalization time. 6.Rich in six kinds of dietary fiber, reduce intestinal problems of diarrhea, bloating and constipation, delay blood sugar fluctuations, protect the intestinal mucosa barrier function, increase the number of intestinal beneficial bacteria, and protect the intestinal tract comprehensively. As long as the gastrointestinal tract is functional, we should prefer enteral nutrition. Therefore, enteral nutrition therapy is the preferred route of clinical nutrition therapy.