The article considers the scientific and practical problems of legal regulation and improvement of the strategic planning system in the Russian Federation as one of the tools to ensure environmental safety, nature conservation, sustainable use and restoration of biological diversity. Particular attention was paid to the analysis of the existing problems of implementing strategic environmental assessment in Russian legislation as one of the ways to identify factors that negatively affect the environment in the process of implementing a strategic initiative at the strategic planning stage. The likely consequences of the implementation of the strategic initiative and the development of effective mechanisms to prevent or minimize negative environmental consequences were also assessed. The authors compare the experience of foreign countries and Russia in the legal solution of the national problems of introducing and implementing SEA, and also justify the need for applying SEA in relation to certain types of activities. In conducting this study, the authors used comparative and analytical research methods.