The purpose of this research is to investigate the implementation of law enforcement against the criminalization of women commercial sex workers in Parangtritis after enactment of Bantul District Regulation Number 5 of 2007 on the Prohibition of
Prostitution and the problem of regulation enforcement of Bantul District Regulation Number 5 of 2007 on the Prohibition of Prostitution. This research is an empirical legal research with a descriptive approach. The results were analyzed with qualitative methods which further draw conclusions with inductive thinking method. The results showed that the application of Bantul District Number 5 of 2007 on the Prohibition of
Prostitution is not successful in reducing the number of prostitution in Parangkusumo, Bantul. In addition, the negative impacts were appeared such as the impact of economic, the impact of law certainty, and the impact of the Social Politics on gender mainstreaming in form of inferiority inaugural women’s position in society. The Failure of Bantul District Regulation Number 5 of 2007 on the Prohibition of Prostitution to identify the root of prostitution’s problem is another implementation obstacle.