Sustainable development is a key topic on today's global agenda due to the threats posed by climate change, environmental pollution, and other ecological issues. Governments and international institutions aim to achieve a balance between economic growth, social welfare, and environmental protection. In this context, new technologies and support for green innovations, which have the potential to enhance environmental safety, play a particularly important role. Effective public administration must adapt to these challenges by actively implementing environmental policies and promoting sustainable development. International cooperation is also critical for integrating global commitments into national strategies. The purpose of this article is to demonstrate how environmental policy can support sustainable development through the improvement of the public administration system. The study provides a detailed analysis of international legal frameworks that regulate environmental policy and sustainability in public administration. Based on a systems approach, the complex interrelationships between government, society, business, and environmental factors are explored, allowing for a deeper understanding of how these elements interact. Using Switzerland as an example, one of the leading countries in environmental governance, the article identifies key elements for integrating environmental principles into public administration. This example demonstrates specific approaches and tools that other countries can adopt. Additionally, the statistics highlight not only global trends in plastic production and consumption but also the number of countries that have implemented environmental policy instruments between 2010 and 2023. This helps assess the scale of environmental initiatives at the global level. A SWOT analysis was conducted to assess the strengths and weaknesses of existing environmental policies, as well as to identify opportunities and threats for future development. This analysis helped outline the key directions for improving environmental policy to further support sustainable development. As a result, it was found that environmental policy within public administration has significant potential for growth, but its success depends on the establishment of an effective monitoring system, the intensification of international cooperation, the adoption of advanced technologies, and active public participation.