Objective　To provide anatomic basis for the resection of post-pancreas trunk of superior mesenteric vein (SMV) and the sequencing vessel anastomosis during the surgical treatment of pancreas uncinate process carcinoma.　Methods　For presumpting the resectable greatest length of the veins during the surgical process of pancreas uncinate process carcinomam, the abdominal specimens (50 male, and 50 female) were used in this study. The length of the SMV behind the uncinate process, and the longitudinal flexure of the SMV were measured after removing the pancreas and duodenum.　Results　The length of the post-pancreas trunk of SMV was about（3.5±0.8）cm and（3.3±0.6）cm for male and female respectively. For 40 male specimens (80%) and 38 female specimens (76%), the length of the post-pancreas trunk exceeded 3.0cm, respectively. The average length of longitudinal flexure of the SMV ranged from 4.0cm to 5.1cm after resecting the pancreas and duodenum.　Conclusions　This study provides a clinical anatomic evidence for the direct end-to-end anastomosis of SMV during the duodenopancreatectomy.