Postoperative gastroparesis after pancreaticoduodenal surgery is mainly manifested by gastric emptying obstacle, which usually requires the placement of gastric tube, rehydration, and the administration of drugs to promote gastric motility. Gastroparesis often occurs 2~3 days after surgery, patients often have nausea, vomiting, need to place a gastric tube for drainage, decompression, usually need to be placed for 1~2 weeks, patients often need to fasting, so need to replenish fluids from the vein (usually including 2000ml of daily needs and the amount of digestive fluids lost by the drainage), which can effectively avoid dehydration, nutritional disorders and other complications. Decrease in gastric tube drainage and clearing of drainage fluid are signs of gastroparesis, and drugs to promote gastric motility (e.g. metoclopramide, etc.) can be applied at this time. Postoperative gastroparesis requires active consultation, timely gastrointestinal decompression, and fasting and reasonable application of medications as prescribed by the doctor.