The collective monographic study analyzes a wide range of problems in the methodology, theory and practice of the judiciary and the administration of justice, which are presented in a systemic unity based on the doctrine of judicial jurisprudence. On this basis, an analysis of domestic judicial jurisprudence was made in the system of modern constitutionalism, which experiences not only the protective, but also the transformative influence of the judiciary. The development of the concept of judicial jurisprudence at a new, modern stage is an attempt to find optimal approaches to understanding the place and role of judicial practice in the system of sources of law, which are in demand by the practice of justice itself, and to bring together the positions of supporters and opponents of judicial precedent principles in the modern domestic legal order. The study of the relevant issues involves the analysis of the features of the legal nature of the judicial decisions of the Constitutional Court of the Russian Federation, the Supreme Court of the Russian Federation, their importance both for ensuring the uniformity of judicial practice and the development of substantive and procedural legislation. The work is aimed both at specialists — representatives of the theory and practice of justice, and at a wide range of readers interested in the legal analysis of the place and role of judicial jurisprudence in the legal system of the Russian Federation.