Pancreatic fat generally refers to pancreatic hypertrophy, and the common causes are pancreatitis, autoimmune disorders or pancreatic tumors, etc., which should be consulted in time to find out the causes. 1. Pancreatitis: the most common cause of pancreatic enlargement is pancreatitis, which is an acute inflammation of the pancreas and the surrounding tissues due to various reasons, and is commonly caused by biliary system diseases, such as choledocholithiasis, gallbladder stones, alcoholism, overeating and other reasons, which can cause pancreatic edema. 2. Autoimmune disorders: Autoimmune pancreatitis is a special kind of pancreatic inflammation, because patients have autoimmune antibody positive, so it leads to autoimmune disorders resulting in pancreatic enlargement. 3. Pancreatic tumors: Pancreatic tumors are pancreatic cancers with clinical manifestations of pancreatic enlargement. At this time, it is necessary to combine with imaging examination, and the commonly used examination methods include abdominal CT, abdominal MRI or abdominal ultrasound. Pancreatic hypertrophy, patients should seek timely medical treatment to determine the cause of the disease and carry out appropriate treatment.