It is prohibited to drink water during the treatment of pancreatitis, which is sudden and persistent pain in the upper abdomen with nausea, vomiting, and back radiating pain. The treatment plan is aggressive fasting, gastrointestinal decompression, acid suppression, enzyme suppression, and intravenous rehydration therapy. After these treatment plans, mild edematous pancreatitis will gradually improve. However, some of them will continue to develop into severe necrotizing pancreatitis. The secretion of gastric juice will aggravate the symptoms of the pancreas and stimulate the secretion of pancreatic enzymes, so gastrointestinal decompression should be performed. During the treatment period, it is even more important not to drink water. Drinking water will also stimulate the secretion of digestive juices and stimulate pancreatic enzymes, so the treatment plan includes the treatment measure of gastrointestinal decompression. You can drink water only after the symptoms are relieved during the treatment, or as prescribed by the doctor.