Objective:To investigate the prevalence of depression and influential factors in drug users receiving methadone mainte-nance treatment in Nanchang,trying to find some evidence for more mental intervention. Methods:Drug users receiving metha-done maintenance treatment in Nanchang were selected by convenience cluster sampling and surveyed with questionnaire including self-rating depression scale(SDS) and self-made general questionnaire. Results:The overall prevalence of depression was 53.91%(207/384) in drug users receiving methadone maintenance treatment in Nanchang;the mean score of depression was (55.03?11.05). Multivariate logistic analysis indicated that female(OR=0.243),good economic conditions in their own conceit (OR=0.550) and learning more about the knowledge of HIV/AIDS(OR=0.358) had a protective effect on depression;having a drug addiction attack(OR=1.762)and great economic pressure (OR=1.585) were risk factors for depression. Conclusion:The depression are common in drug users re-ceiving methadone maintenance treatment in Nanchang;therefore,we should take appropriate preventive measures in accordance with the patient’s specific situation in the clinical work,so as to prevent the occurrence of depression in drug users receiving methadone maintenance treatment.