The paper describes a preventive project of the Ministry of the Interior of the Czech Republic, which has been permanently implemented in the Czech Republic since 2009 under the name “Crime Prevention Assistant”. At that time, the authors of the paper were active participants in implementing the described project into practice from the position of members of the Police of the Czech Republic in the locality of the Ostrava City Directorate, which had and still has excluded localities with socially disadvantaged citizens. The crime prevention assistants, as described by the authors, have gone through the implementing difficulties in carrying out the required tasks, which is no longer a problem after years of practice. In addition to comprehensive information about the project, the authors present an overview of the number of assistants, the amount of their remuneration and a list of tasks they must perform. As examples from practice, they present experience from two district cities in the Czech Republic (Karviná, Písek), as proof of the functionality of the project.