The application of nasogastrointestinal tube for enteral nutrition in postoperative gastroparesis, the application of nasogastroduodenal nutrition tube in early postoperative enteral nutrition for esophageal cancer, in the application to patients who cannot eat by mouth, has a non-negligible role in improving patients’ nutritional status and promoting disease recovery. Implementation method of nasogastrointestinal tube route Placement method: Preoperatively, the tube is inserted through the left or right nostril respectively. For non-surgical patients, the tube can be placed under gastroscopic or duodenoscopic guidance or radiographic fluoroscopy to reach 20 cm after the duodenal Treitz ligament. We basically adopt the continuous gravity drip method to avoid the intermittent pushing of enteral nutrition solution. The rate is generally 25-50 ml/h at the beginning and can be gradually increased to a rate of 100-125 ml/h. The speed is generally controlled by infusion apparatus, and a balanced entry rate can reduce the adverse reactions of patients, such as abdominal pain, bloating, nausea and vomiting, the speed should be slowed down or the infusion should be stopped in time.