国际投资法渊源新论

目前在国际投资领域，并不存在一个单一的全方位的法律制度，但一个范围广泛的国际投资法律制度正在形成，该法律制度包括各种原则与规则，其渊源和形式各异，而且它们的约束力与特性以及实施的层面也迥然不同。组成这一法律制度的规则既有习惯国际法，也有双边、区域以及多边协定，还有国际机构的实践，没有法律约束力的权威文本，以及各国的国内法律与政策，它们共同发挥调整国际投资关系的作用。

New view on the sources of international investment law

While there is no single legal instrument covering all aspects of FDI, a broad international investment legal framework is taking shape, consisting of a wide variety of principles and rules of diverse origins and forms, differing in strength and specificity and operating at several levels, with gaps in their coverage of issues and countries. This framework includes rules of customary international law, bilateral, regional and multilateral agreements, acts of international institutions, and authoritative texts without formal binding force, and national laws and policies, all playing the role of regulating relations of international investment.