The signing of the Regional Comprehensive Economic Partnership Agreement (RCEP) brings hope to the declining global economy. High-level RCEP investment rules promote investment liberalization and facilitation, but there is also a lack of a dispute settlement mechanism between investors and countries. RCEP creates a stable investment environment for regional investment, and provides a lower market entry barrier and new rules of origin. RCEP brings opportunities to investors. However, in the context of fierce competition between China and the United States, investors in the RCEP region, in addition to facing conventional investment risks, also face sanctions from other countries in the region and challenges from members of the Comprehensive and Progressive Trans-Pacific Partnership Agreement. Chinese investors are also facing uncertainty in the process of entering into force of RCEP. Facing the investment opportunities and challenges in the RCEP region, Chinese investors need to seize the investment opportunities, and do a good job of risk prevention and control. When they are unfairly treated by the RCEP contracting parties, they should use existing rules to protect their rights and interests.