The author points out the increased hepatobiliar intracanalicular pressure represents one of the factors responsible for the development of acute pancreatitis. Decompression of ductus choledochus by T-drainage or by reestablishment of the flow of pancreatico-biliary secretion through the Vater's papilla leads to the fall of the pressure in ductus choledochus, and probably to the decrease of intracanalicular pressure in the pancreas. They think that gastro-jejunostomy plays a significant role in the decrease of reflectory mediatory gastro-antral-duodenal influence upon a pancreatic secretion as well as on gastric decompression. Further, they think that one should not wait for a progressive pancreatic tissue necrosis to happen before operation, since this increases the risks involved; but the patient with acute pancreatitis should be operated on, when conservative treatment has not give the expected results. The number of the operations performed in cases of acute pancreatitis, their postoperative course, as well as the absence of the common complications give hope, that by the mentioned surgical procedures the present high mortality rate of this severe disease will be decreased.