The surgery time for pancreatic tumors cannot be determined because pancreatic tumors, such as pancreatic head cancer and pancreatic body cancer, are quite different. And generally pancreatic surgery is longer, taking more than 10 hours; some may be relatively simple, taking 2-3 hours. In the past, traditional surgery was open surgery, which usually took 4-6 hours. With the development of minimally invasive surgery in recent years, the operation time is shortened, but simple pancreatic surgery, such as pancreatic head cancer surgery, still takes about 3 hours. If you are doing a whole pancreas tumor surgery, it may take even longer. Because there are more organs involved around the pancreas, adjacent to the duodenum, common bile duct and stomach, the surgery requires more reconstruction of the digestive tract. After the pancreas is cut, it needs to be anastomosed with the common bile duct, jejunum and stomach. Therefore, the operation is complicated and the operation volume is large. The operation time is usually very long, and there may be more complications and comorbidities after the operation.