Acute pancreatitis is acute pancreatic inflammation which can lead to damage of surrounding tissues and other organic systems. In the case of acute pancreatitis, autodigestion of pancreatic tissue is induced as a result of activation of zymogenic forms of enzyme in the active proteolytic enzymes. In patients with acute pancreatitis occurs severe abdominal pain. The most important diagnostic markers are serum lipase and serum amylase. There are two forms of acute pancreatitis: mild acute pancreatitis and severe acute pancreatitis. The purpose of this study was to analyze and evaluate the nutritive status of a patient suffering from acute pancreatitis at arrival and release from KB Dubrava with a particular focus on patient's diet during hospital stay.