Abstract： Objective To determine the long-term results after combined pancreas-kidney transplantation at a single-center institution.Methods Fifty-three consecutive patients with insulin-dependent diabetes mellitus and end-stage nephropathy were followed up for more than three years after combined pancreas-kidney transplantation. Immunosuppressive protocol consisted of tacrolimus ( TAC ),mycophenolate mofetil (MMF),and steroids,and antithymocyte globulin or anti-CD25 receptor mAb.The impact of different risk factors was analyzed on long term patient and graft survival.Results The 3-,5- and 8-year survival rate in recipients was 90.1％,89.1 ％ and 80.0％,respectively.The 3-,5- and 8-year survival rate of pancreas grafts was 84.9％,84.8％ and 60.0％,and that of kidney grafts was 83.0％,82.6％ and 53.3％,respectively.Principal causes of death were Infection (n =4),renal failure (n =2),cardiovascular events (n =1 ),and cerebrovascular accident (n =1 ).Graft failure for the pancreas was caused by death with a functioning graft (n =6),rejection (n =2),thrombosis (n =1 ) and pancreatitis (n =1 ).Graft failure for the kidney was due to rejection (n =9),and death with a functioning graft (n =9).Conclusion This series representing the largest experience with long-term follow up in China confirms an excellent long-term survival.Infection,rejection and surgical complication were the major risk factors leading to deaths and graft loss.