Patients with severe pancreatitis should not eat orally. Historically, suppressing pancreatic enzyme secretion by resting the intestines has been considered an important means of controlling the progression of acute pancreatitis. Currently, the implementation of early enteral nutrition is proposed. Early enteral nutrition should be administered via a jejunal tube, which is safer. The nutritional formulation should be chosen based on the patient's condition and intestinal tolerance. Initially, only glucose water may be used to allow the intestines to adapt to the nutrition. Early nutrition should use low-fat preparations containing amino acids or short peptides, because whole proteins entering the intestine directly without being digested by stomach acid can cause indigestion. As the condition enters the recovery phase, the feeding amount and rate can be gradually increased, and preparations containing whole proteins may be given.