The pancreas and the organs surrounding the jugular abdomen are located in the retroperitoneum, with many adjacent organs, rich in blood vessels and complex anatomy, and are prone to peripheral infiltration and metastasis after malignant transformation, which makes clinical diagnosis and treatment difficult and the prognosis is poor. Peripheral cancer (lower bile duct cancer, descending duodenal cancer, duodenal papillary cancer) and pancreatic tumors (pancreatic head cancer, pancreatic body tail cancer, pancreatic endocrine tumors and rare pancreatic junctional tumors), with rich experience and high success rate of surgery.