Objective To study the surgical technique of right hemihepatectomy in adult-to-adult living donor liver transplantation . Methods Eight donors underwent right hemihepatectomy in adult-to-adult living donor liver transplantation . Among these donors operation, there were 5 right hemihepatectomy and 3 extended right hemihepatectomy . If the diameter of the auxiliary right hepatic vein more than 0.8cm, it should be reserved. The dissection line of right hemihepatectomy was at the 0.5cm～1.0cm to the right side of middle hepatic vein, and the dissection line of extended right hemihepatectomy was at 0.5cm～1.0cm to the left side of middle hepatic vein. Intraoperative cholangiogram was performed, and without inflow vascular occlusion was done during the operation.Results The donor average operation time was 448 min (ranged from 353 min to 510 min). The average blood loss of operation was 384 ml (ranged from 170ml to 900ml). The grafts average weight was 669.4g (ranged from 445g to 900g), the right hemihepatic grafts weighted 667.0g averagely and the extended right hemihepatectic grafts weighted 673.3g averagely.The average graft-to-recipient body weight was 1.16% (ranged from 0.76% to 1.50% ). There were 2 donors occurred complications including biliary leak in 1, and dysfunction of liver and kidney in 1, all the 2 complications were cured. There was no donor mortality and all donors well recovered,All the donors were discharged within three weeks after operation.All of the 8 grafts and 8 recipients survived one year. Conclusions The right hemihepatectomy and extended right hemihepatectomy in adult-to-adult living donor liver transplantation can be performed safely,if the liver resection techmqne is proformed exactly and successfully.