Objective: To compare efficacies and safeties of DICE and CHOP regimens in treating intermediate and high grade non-Hodgkin's lymphoma(NHL), and indicate the standard treatment for it.Methods: A total of 74 patients with moderately or highly malignant NHL, verified by pathology or histology, were randomized into the trial group (37 patients treated with DICE regimen)and the control group(37 patients treated with CHOP regimen).Survival rate was analyzed by Kaplan-Meier method.Chi-square test was performed between groups.Results: The complete response rate, partial response rate, and response rate were significantly higher in DICE group than in CHOP group(40.5% vs.29.7%, 37.8% vs.27.0%, and 78.3%vs.56.7%, respectively, P＜0.05).The 1-, 3-, and 5-year survival rates were significantly higher in DICE group than in CHOP group(89.2% vs.81.2%, 76.0% vs.52.6%%, and 46.7% vs.36.4%, respectively, P＜0.05).The major side effects, appeared with no differences(P＞0.05)in incidences between the two groups, were leukopenia, thrombocytopenia, and nausea.There were only three episodes of clinical cystitis or gross haematuria in DICE regimen.Conclusion: The results showed higher efficacy of DICE regimen over CHOP regimen.DICE regimen may prolong the survival time of patients with moderately and highly malignant NHL.