The development of new technologies, especially blockchain technology, as one of the main achievements of recent decades, has been influential not only in the fields of information and communication technology, but also in the field of international economic law. The green economy or environmental economy has attracted the attention of many governments in recent decades, and the mutual effects of the economy and the environment have become an undeniable reality; in such a way that economic policies affect the environment and, in turn, the economy is affected by environmental changes. The present study, which was conducted using a descriptive-analytical method, has attempted to answer the fundamental question of what position blockchain technology has in international economic law and how it can facilitate the development of the green economy? Blockchain technology has a special position in international economic law. Blockchain, as a secure and decentralized technology infrastructure, is effective in a variety of cases, from international trade to supply chain management and facilitating e-commerce. Blockchain technology can improve the performance of green economic systems by creating transparency, reducing fraud, fast data transfer, promoting green trade and better management of natural resources. Also, the approach of international economic law towards blockchain technology requires the development of appropriate rules and regulations to ensure the security and transparency of activities in this area. Cooperation between governments, international organizations and industrialists is essential for the development of a green economy and the conservation of natural resources.