The kocher technique was used to separate the space between the descending part of duodenum and the inferior vena cava, to separate and resect the gastrocolonic ligament, then to enter the small reticular sac, and to separate the anterior lobe of the transverse mesocolon from the dorsal membrane of the pancreas under the posterior wall of the lesser omental sac. The superior mesenteric vein was found at the lower margin of the pancreas, and the separation forceps were perforated along the superior mesenteric vein to the posterior side of the pancreas until the portal vein; the hepatoduodenal ligament was dissected to free the porta hepatis; the free ligament was located in the greater curvature of the stomach and the lesser curvature of the stomach, respectively. The stomach was cut off by using a straight line stapler, the pancreas was cut off at the predetermined resection site, the venules between the uncinate process and SMV, and the possible blood vessels such as gastrocolic trunk and right gastroepiploic vein were carefully separated. Therefore pancreaticojejunostomy, choledochojejunostomy and gastrointestinal anastomosis were performed respectively.