Acute pancreatitis often causes abdominal pain, abdominal distension, vomiting and other symptoms, and in severe cases can cause shock, respiratory failure and renal failure. Fasting is a basic principle in the early treatment of acute pancreatitis, the purpose of which is to minimize the stimulation of food to the pancreas and reduce the secretion of pancreatic juice through fasting. In addition, fasting can also reduce symptoms such as abdominal pain and bloating. Gastrointestinal decompression was also a routine measure in the treatment of acute pancreatitis in the past. Its purpose is to drain gastric juice out of the body by placing a nasogastric tube, thus avoiding the stimulation of gastric juice to the pancreas and reducing the abdominal distension caused by gastric retention. However, for most patients with acute pancreatitis, the benefits of gastrointestinal decompression are limited, so many hospitals do not currently use gastrointestinal decompression as a routine treatment for acute pancreatitis.