The purpose of the study is to theoretically understand the essence of the systems approach and substantiate its scientific and applied significance for the forensic study of judicial proceedings as a complex procedural and organizational systemic object. Methodology: the study is based on the integrated use of general scientific methods (analysis, synthesis, induction, deduction, abstraction), the philosophical dialectical method, and specific scientific methods (systemic, structural-functional, formal-logical). The work applies the provisions of systems theory, elements of cybernetic analysis, and methodological developments in forensic science, focused on the study of managerial and functional relationships in criminal proceedings. Conclusions. The systems approach is an independent methodology for studying the relationships between elements and the integrity of an object, applicable to the analysis of legal proceedings as a multi-level procedural and forensic system. Trial proceedings in trial and appellate courts can be reasonably viewed as a systemic entity possessing a structure, a hierarchy of levels, horizontal and vertical connections, and distinct system-forming management relationships. The principles of integrity, structure, hierarchy, connection to the environment, management, functioning, and development form the theoretical and methodological basis for a systemic analysis of judicial activity. Management is a key system-forming relationship, ensuring the targeted development of judicial proceedings and the achievement of justice objectives. The potential of a systems approach in forensic research is underutilized, despite its significant potential for optimizing scientific research and law enforcement practice. Scientific and Practical Significance. The scientific significance of this work lies in its clarification of the categorical apparatus of the systems approach as applied to forensic science, its substantiation of its place within the framework of forensic methodology, and the development of a theoretical model of legal proceedings as a systemic object. Its practical significance lies in the potential use of systems analysis to improve trial management, enhance the coordination of participants, optimize procedural decisions, and enhance forensic support for law enforcement activities