The article is devoted to the study of the value of customary law and its regulatory role. Customary law plays an important role in preserving the traditions and cultural heritage of the peoples of the North Caucasus, reflecting the unique characteristics of a particular people, their values, norms of behavior and, very importantly, from the point of view of modern legal understanding, ideas about justice. The paper shows the regulatory potential of customary law, and suggests an author's approach to understanding customary law.