Objective To evaluate the effect of promotion of male circumcision for HIV/AIDS prevention among male drug users in Guangxi,China. Methods Cluster sampling method was used to recruit 490 HIV/AIDS negative male drug users from four methadone clinics in Guangxi. After a baseline survey,an education program about the know ledge of circumcision to prevent HIV/AIDS was carried out and the subjects w ho were w illing to undergo surgery were provided free circumcision. After nine months,w e follow ed up the subjec...