[영문]This study examined the prevalence of perpetration of intimate partner violence among 356 men recruited from methadone maintenance treatment programs. We used logistic regression with covariance adjustment to examine the associations between intimate partner violence and illicit drug use by the participants, their female partners, or both. We found a high prevalence of intimate partner violence among the men in our sample. Significant associations between intimate partner violence and illicit drug use varied by types of drugs and whether the female partner or both partners were using drugs.