Annotation: The article is devoted to the expediency of interaction between the National Police and the National Guard of Ukraine in the field of public order and security. The scientific opinion on the definition of the notions of "public order" and "public safety" and their correlation is researched. The authors raised the issue of fighting offenses as the main function of the bodies of the National Police and the National Guard of Ukraine. The article analyzes the practice of applying the regulatory framework on cooperation between the Ministry of Internal Affairs in ensuring public order during mass events.