The purpose of this article is to examine the treatment program of adolescent sex offenders in America. Thereby, it attempts to provide several improvement ways in adolescent sex offender treatment in Korea. In America, the social policy response to adolescents who commit sexual offenses has undergone dramatic change since the early 1980s. Prior to this time, acts of sexual offense by teenagers were often dismissed or trivialized. And treatment programs were rare. But, the crimes are considered serious, juvenile sex offenders are routinely prosecuted since 1980s. Sex offending by teenagers has come to be viewed as a unique form of deviance that requires different rehabilitative strategies than do those employed with other offenders. So, specialized treatment programs have proliferated. The cornerstone of policies regarding intervention, both within institutions and in community, is that juveniles who commit sexual offenses should be mandated to participate in specialized treatment programs that specifically address the sex offense behavior. Specialized treatment programs for adolescent sex offender have proliferated, continuously. Specialized treatment programs for adolescent sex offender are provided within institutions and in community in America. And most programs are provided in community. Based on reviewing realities of adolescent sex offender program in America, it suggest several ways for effective treatment in Korea.