This study indexed the mental status in six living donor liver transplantations (LDLT) performed at the Juntendo University Hospital between 2005 and 2007. The donors' preoperative and postoperative psychiatric and psychological status was assessed using the Profile of Mood States (POMS) and the State–Trait Anxiety Inventory (STAI). The present study found that the donors' POMS anger/hostile score decreased significantly following transplantation. In addition, the STAI score suggested that donors had little anxiety or depression following the operation. Although the present study was limited due to the small number of donors, the findings suggest that a successful operation stabilizes donor mentality. The studied donors will be reassessed for their mental and physical condition in the future.