The main common causes of acute pancreatitis are as follows: 1, biliary origin (stones, inflammation, roundworms); 2, hypertriglyceridemia; 3, alcoholic; 4, autoimmune; 5, abnormal biliopancreatic duct coaptation; 6, diverticulitis; 7, spasm of the sphincter of Oddis; 8, viral (e.g., mumps virus); 9, pharmacological; 10, hypercalcemia (tumor); 11, PEP (post-ERCP pancreatitis); 12, traumatic (hematoma).