Over the past decade, the backlash against investment arbitration has become worldwide and correspondingly the investment treaty reform has been undertaken at multiple levels. In this context, a multilateral investment agreement (“MIA”) has been called for as a global effort to address the global backlash. Arguably, the current condition for a MIA might be more favorable than before, as the interests of developed countries and developing countries have changed. After examining the need of a MIA for the global backlash, this paper attempts to explore China’s recent practice in this aspect, including that (1) China’s changing interest in outward foreign direct investment and investment treaty practice reflect the changing landscape of international investment law; (2) the 2016 G20 under China’s presidency achieved the Guiding Principles for Global Investment Policymaking; and (3) China has joined to work on a multilateral framework on investment facilitation at the WTO.