Four techniques in Whipple operation improved by the anthor in this article are as follow: ①the jejunum was pulled up to the area above transverse colon through the duodenal canal behide intestinal mesenteric radix. ②As Hofmeister’s method, the duodenojejunostomy or gastrojejunostomy was made through mesentery of transverse colon. ③The internal drainage tube inserted into the pancreatic duct was extended to about 25 to 30 cm. ④A silicon tube for feeding about 3 mm diameter was placed into distal jejudum through anterior wall of gastric antrum, pylorus and duodenojejunal anastomosis. The techniques and their advantages are elaborated in this paper.
