The purpose of this study was Assess and analyze the implementation of Law No. 35 Year 2009 on Narcotics Police jurisdiction Boyolali, and assess and explain the barriers experienced by law enforcement agencies in taking action against the perpetrators of criminal acts are categorized as narcotics users according to Law No. 35 Year 2009 on Narcotics. The method used normative juridical, which is done by studying the existing norms or regulations undanganyang closely related to the issues to be discussed. The nature of research is descriptive analytic. Will be analyzed descriptively object under study. Source of data used secondary data consists of primary legal materials, secondary and tertiary. Implementation of Act No. 35 of 2009 on Narcotics Police jurisdiction Boyolali not fully implemented. It can be seen from the various provisions of articles in the law which has not been implemented. The provisions that have not been applied or implemented include a variety of things starting from institutional functions which include socialization function, investigators, and the investigators, and the other article as a function of rehabilitation that can not be used at all because of the absence of a rehabilitation center for drug addicts in the jurisdiction police district Boyolali; Barriers experienced by law enforcement agencies in taking action against the perpetrators of criminal acts are categorized as narcotics users according to Law No. 35 Year 2009 on Narcotics, namely: lack of community participation even though there participation to provide information that there has been a criminal offense narktoka abuse. And a network of criminal acts that drug abuse is severed its links Keywords: Judicial Review of the Implementation of Law No. 35 of 2009