Acute pancreatitis (AP) is initiated by the activation of pancreatic enzymes triggered by a variety of causes, and characterized by inflammatory damage of the pancreas and commonly complicated with functional deterioration of other organs. Although AP in most patients is a mild and self-limited condition, 20% to 30% of cases will develop severe acute pancreatitis (SAP), which has a rapidly progressive course and no effective treatment, with an overall mortality of 5% to 10%. Nutrition support therapy is an important part of the integrated therapy program for AP, but there is no uniform protocol to be followed as yet. In this paper, the authors present the literature review of recent researches related to nutrition support therapy of AP.