Objective To contrast two different types of vascular anastomosis for small bowel transplantation（SBT）in rat in order to improve survival rate of SBT. Method 120 SBT models were established which the donorsand recipients were from SD and Wistar respectively. They were divided into two groups evenly（each n=60）. The abdominal aorta and portal vein of the donors were end-to-side anastomosed with abdominal aorta and vena cavainferior of the recipients by continuous suture of two thread with two points fixed（control group）and continuous sutureof single thread with one points fixed（experimental group）. The time of vascular anastomosis，complication and 3-daysurvival rate were compared between two groups. Results The total time of vascular anastomosis were（53.42±4.16）minutes in control group and（42.31±3.72）minutes in experimental group（P＜0.01）. Bleeding was more likely tooccur in experimental group，while error suture of the opposite side were more likely in control group（P＜0.05 andP＜0.01）. There was no significance in anastomotic stoma complication between two groups（P＞0.05）. Survival

rate on day 3 were 57.1% in control group and 78.9% in experimental group（P＜0.05）. Conclusion The timeof vascular anastomosis by continuous suture of single thread with one points fixed was significantly reduced，whichimproved the survival rate of SBT in rat.

Small bowel transplantation, Rat, Vascular anastomosis