Severe acute pancreatitis is a common critical emergency in the digestive system. It is difficult to treat in clinic and has high mortality. According to the new Atlanta classification standard proposed in 2012, the treatment of acute pancreatitis mainly focused on early indentification, maintenance of organ function, anti-inflammatory response, intestinal function maintenance and other measures, so as to improve the success rate of the treatment. As more patients with severe acute pancreatitis have successfully crossed the acute phase, the prevention and treatment of subsequent complications of acute pancreatitis have been increasingly valued. To focus on the "secondary attack" of acute pancreatitis, it is necessary to carry out clinical research on the subsequent complications such as the accumulation of peripancreatic fluid, infectious necrosis, and vascular complications, and to reduce the mortality. This is a change in the focus of acute pancreatitis treatment and a further extension of the concept of multidisciplinary collaboration in acute pancreatitis.