The textbook has been prepared on the basis of studying the theoretical and practical provisions of the organization and functioning of state-governmental law enforcement structures directly related to issues of security and law and order in the territory of the Russian Federation. Information is provided on the main activities, goals, objectives, structure, principles of organization and powers of law enforcement agencies, taking into account changes in legislation in the process of reforming the system of public authorities and management. Meets the requirements of the federal state educational standards of secondary vocational education of the latest generation. For students of secondary specialized and higher educational institutions studying in the specialty and direction of training "Jurisprudence", as well as for teachers and practitioners.