Legal analysis: The international sources of international economic law mainly include: (1) The international treaties here refer to international treaties in a broad sense, including all legally binding documents concluded between countries and between countries and international organizations, which appear in the name of treaties, conventions, agreements and agreements, with the purpose of adjusting international economic relations, such as the establishment of convention establishing the multilateral investment guarantee agency. Generally speaking, as the source of international economic law, the binding force of international treaties is limited to its States parties. International treaties can be bilateral or multilateral; The former refers to an international treaty with only two parties, while the latter refers to an international treaty with three or more parties. (II) International Practice International practice refers to the customary legal norms with definite contents, which are adopted by the parties and become their rules of conduct. As the source of international economic law, international practices can be unwritten. However, due to the work of some international organizations, many international practices in the international economic field have become culture, such as Incoterms formulated by the International Chamber of Commerce. (3) resolutions of international organizations here also refer to resolutions of international organizations, which refer to all cultures formulated by international organizations that are binding on their member States, such as various regulations, directives and decisions of the European Union and the United Nations.

Legal basis: Charter of Economic Rights and Duties of States and Declaration on the Establishment of a New International Economic Order, etc.