Radical antegrade modular pancreatosplenectomy（RAMPS），was thought to have more lymph node yield and higher negative margin rates. In this case，the patient was admitted due to adenocarcinoma，who received placement of pancreatic stent previously. After evaluation，a surgical plan of robotic assisted posterior RAMPS combined with bilateral pancreatic mesangectomy was made. Intraoperatively，the gastrocolic omentum was divided first，then the superior mesenteric artery，the superior mesenteric vein and the left renal vein was exposed successively after dissection of inferior margin of pancreas. Dissection then proceeds cranially and dorsally along the left renal vessels，after which pancreatic head，splenic vein and uncinate process were divided successively. The splenic artery and left gastric artery were dissection along celiac trunk，after which the splenic artery was divided. Left gastric vein，gastrosplenic ligament and gastropancreatic ligment was dissected leftwards along the greater curvature and lesser curvature，to resect distal pancreas and peri-pancreatic tissue. The instrument was docked again after removal of the specimen，then the ligation of vascular end was reinforced，the pancreatic stump was bundled，and the drainage was placed.