The current international investment law system is insufficiently compatible with sustainable development. To better address sustainable development concerns associated with transnational investment activities, international investment agreements should be made more compatible with sustainable development. Integrating Sustainable Development in International Investment Law presents an important systematic study of the issue of sustainable development in the international investment law system, using conceptual, normative and governance perspectives to explore the challenges and possible solutions for making international investment law more compatible with sustainable development. Chi suggests that to effectively address the sustainable development concerns associated with transnational investment activities, the international investment agreements system should be reformed. Such reform should feature redesigning the provisions of the agreements, improving the structure of international investment agreements, strengthening the function of soft law, engaging non-state actors and enhancing the dispute settlement mechanism. The book is primarily aimed at national and international treaty and policy-makers, lawyers and scholars. It is also suitable for graduate students studying international law and policy-making.