Abstract： Objective To investigate the factors influencing the long-term survival of pancreatic carcinoma Datients after radicaI resection. Methods The data of 184 pancreatic carcinoma patients with radical resection were analyzed retrospectively.Analysis of the prognostic factors influencing the long-term survival was performed using Cox proportional hazard regression model.Results The overall 1-,3-and 5-vear survival rates in this group were 61.7%.29.O%and 14.3%,respectively.They were 78.0%,38.4%and 25.7%,respectively,for the patients with a tumor＜3 cm in diameter,significantly better than those with a tumor≥3 cm(52.8%,22.7%and 7.2%,respectively,P＜0.05).Moreover,the 1-,3-and 5-year survival rates were 67.6%,30.5%and 17.4%,respectively,in the patients without lymph node involvement.much longer than that in those with lymph node metastasis(37.1%,20.6%and 0,respectively,P＜0.05).Multivariate analysis by Cox proportional hazard regression model revealed that the tumor size(P＜0.05)and lymph node metastasis(P＜0.01)significantly influenced the long-term survival of the patients.Conclusion Tumor size and lymph node metastasis are significant factors influencing the long.term survival of pancreatic carcinoma patients with radical resection.Therefore,early diagnosis and radical resection are the key points to improve treatment outcome.