The subject of the study is the evaluation of the effectiveness of the public procurement system. The aim of the work was the formation of a procedure for assessing the effectiveness of the public procurement system. The article systematizes the problems of public procurement management for the needs of federal state unitary enterprises and other organizations, including those essential for ensuring the rights and legitimate interests of citizens of the Russian Federation, the defense capability, and security of the state. As a result of the study, the following tasks were solved. 1. The necessity of designing a procedure for assessing the effectiveness of the public procurement system was considered and substantiated; 2. The essence and concept of the procedure for assessing the effectiveness of the public procurement system is demonstrated; 3. The theoretical principles of designing the procedure for the effectiveness of the public procurement system are formulated and the main categories are explained; 4. The procedure for performing an expert assessment is proposed; 5. The algorithm for assessing the effectiveness of the public procurement system is presented and explained, and 6. The general concept of its materialization is formulated. The article proposes to consider a comprehensive indicator of the effectiveness of the public procurement system as a high-quality, practice-oriented, and theoretically substantiated assessment of the effectiveness of the public procurement system based on the principle of comprehensiveness. The proposed procedure is holistic and logical, it allows the widespread use of national statistics, which are distinguished by a high degree of reliability and verification, and therefore provide a high-quality, practice-oriented, and theoretically justified assessment of the effectiveness of the public procurement system.