The isolating system of social reintegration for perpetrators of sexual offenses on juvenile based on existing provisions of the law – Polish casus. The article is an attempt to show the possibilities of creating conditions that increase the sense of social security against the perpetrators of sexual offenses on juvenile who leave penitentiaries after serving a custodial sentence. As it is clear from the research conducted so far, none of the therapeutic and pharmacological methods can guarantee the changes in the offender’s mentality and, hence, their sexual motivations. Therefore, we should look for alternative methods of dealing with sexual offenders who return to life in society. There ought to be a coherent system of prevention combining the use of security measures, resulting from The Penal Code provisions, directing the offender to the ambulatory treatment in order to carry out pharmacological therapy and psychotherapy, and implementing the system of control based on electronic supervision. This form of supervision of sexual offenders would help to provide greater social security. The objective of this paper is attempt to show methods of dealing with offenders diagnosed with sexual dysfunctions who are about to leave penitentiaries. The introduction of certain solutions, based on existing law, can meet social expectations in this important area.