This study aims to explain what drug addiction treatment is and the roles that nursing staff should play in it. Clinical therapy and short-term hospitalization have been the main strategies adopted in the past in Taiwan. Trials involving methadone maintenance therapy and long-term residential therapy were started in 2006. Because of its infancy, therefore, many nursing staffs are still unfamiliar with drug addiction treatment. This study therefore aims to explain what drug addiction treatment is and the roles that nursing staff should play in it. It is to be hoped that more nursing staff will get involved in the field of drug addiction treatment and thereby help drug addicts to reject drugs and avoid the hazards that they present.