Abstract： Objective To investigate clinical effectiveness and feasibility of adult liver transplantation using the left lobe.Methods We analyzed the clinical data of 9 recipients who underwent adult liver transplantation using left lobe from March 2007 to April 2011,including 5 cases receiving split liver transplantation and rest 4 cases receiving living donor liver transplantation.Mean graft weight was 444.6 g (325-570 g) and mean graft-recipient weight ratio was 0.886％ (0.65％-1.18％ ).The middle hepatic vein was reserved in 7 cases.Six cases underwent Laden back surgical and 3 cases underwent classical surgical procedures.During the operation,PVP of 4 cases exceeded 20 mm Hg (2.67 kPa),3 cases were subjected to splenic artery ligation and 1 case to splenectomy.All recipients after operation were treated with triple drug maimenance therapy of Tacrolimus,Mycophenolate Mofetil and corticosteroids.We followed-up the recipients long-term,and the incidence of vascular complications and biliary complications,patient and graft survival,restoration of liver function were observed.Results No serious complications occurred in 4 living donors subject to left lobotomy and the liver function had a good recovery.The median follow-up period of these 9 recipients was 15.7 months ( 1 month to 51 months).Overall 1-year patient and graft survival rate was 77.8％ (7/9).Two cases died after operation.In the remaining 7 cases,1 case had initial poor graft function,and cases had initial good graft function.The main complications after operation included biliary anastomotic strictures in 1 case,small-for-size syndrome in 1 case,portal vein thrombosis in 1 case,initial poor graft function in 1 case and abdominal infection in 2 cases.Conclusion With strict for selecting and good matching donor-recipient,adult liver transplantation using left lobe is safe and feasible.