This research delves into the evolving epistemological foundations of administrative-legal principles within the domain of law enforcement agencies. A meticulous analysis of over 200 scholarly works, with a specific focus on more than ten dissertations, has been conducted to illuminate the essence and content of activities undertaken by law enforcement agencies. The study offers a comprehensive un-derstanding of administrative-legal principles, encompassing their functions, forms, methods of opera-tion, and their legal underpinnings as reflected in sectoral legislative acts. The investigation explores the concept of „administrativelegal principles” and establishes its intricate interrelations with key cate-gories in administrative law, such as „principles of administrative law,” „legal regulation,” and „admin-istrative-legal norms.” Findings reveal that administrative-legal principles form a cohesive system in-fluencing the functions, forms, and methods of operation employed by law enforcement agencies. Key outcomes of the study emphasize the paramount importance of delving into administrative-legal principles within the specific context of law enforcement agencies. A nuanced examination of their functions, forms, and methods of operation underscores their critical role. This research advocates for understanding administrative-legal principles as foundational elements of administrative law, shedding light on their pivotal function in regulating the multifaceted activities of law enforcement agencies.