Severe pancreatitis can be cured, but because its complications are severe, it may be life-threatening. Severe pancreatitis is caused by a variety of etiologies leading to local inflammation, necrosis, and infection of the pancreas, accompanied by systemic inflammatory responses and persistent organ failure. Currently, comprehensive treatment for severe pancreatitis has become very mature, but its mortality rate is still as high as 17%. Currently, with a deeper understanding of the pathology, physiology, and disease progression of severe pancreatitis, there have been advances in treatment modalities, treatment concepts, and means of organ function support for severe pancreatitis. However, the mortality rate for severe pancreatitis remains high, though it can still be cured.