Back pain in pancreatitis is caused by the radiating pain of pancreatitis, which will radiate in a band to the lower back because the inflammatory exudate of the pancreas and the spillage of pancreatic juice will irritate the peritoneum and retroperitoneal tissues, which will cause back pain. In addition, pancreatic duct blockage or when accompanied by cholecystitis or cholelithiasis can also cause posterior back radiating pain. The main clinical manifestation of pancreatitis patients is epigastric pain, which is usually persistent and severe, often accompanied by nausea, vomiting, fever, abdominal distension, etc. In case of severe abdominal pain in pancreatitis, pethidine hydrochloride can also be given temporarily for pain management. However, the key treatment is symptomatic support treatment such as massive rehydration, inhibition of pancreatic enzyme secretion, inhibition of gastric acid secretion, anti-inflammation and correction of electrolyte disorders. Fasting and gastrointestinal decompression are also required.