Promoting institutional openness is a strategic choice for China to adapt to the new stage of opening up, and also an inevitable requirement for deepening cooperation between China and the world. After years of rapid development in China, the development dividend brought by the opening up of commodity and factor mobility has been fully released, and it is bound to turn to institutional opening. At the same time, western developed countries are trying to raise trade and investment barriers by formulating high-standard economic and trade rules, and promote anti-globalization unilateralism, isolationism and trade protectionism. Global competition has gradually evolved from economic competition to rule competition. Steadily promoting institutional openness can shape China's new advantages in international competition and cooperation, improve the quality of the international circulation, promote the joint construction of an open world economy, and better benefit the people of all countries. On the one hand, we should actively adapt to the new trend of the restructuring of international economic and trade rules, pay attention to the fairness of the production of goods and factors, take the initiative to benchmark international high-standard economic and trade rules, strengthen the cohesion of domestic and foreign rules, participate in the negotiation agenda and formulation process of international economic and trade rules with a more active attitude, constantly enhance the institutional voice and influence of participating in global economic governance, and change from the recipient and follower of international economic and trade rules to the maker Leader. On the other hand, we should coordinate the relationship between security and development in the high-level opening up, promote development in security, ensure security in development, lag behind is the biggest insecurity, development is the basis to solve all problems, build an institutional mechanism to maintain national security, orderly expand the institutional opening of key areas of modern service industry such as finance and education, and steadily form a favorable for capital The system of cross-border flow of key production factors such as data. Innovate and improve the negative list management system for foreign investment access. The comprehensive implementation of the pre-entry national treatment plus negative list management system is an important means to expand the opening of the industry, a key measure to build a new system of an open economy, and a major symbol of institutional opening. China's manufacturing industry is relatively open to the outside world, with limited space for further opening, and the service industry is relatively low, which is a key area for expanding the opening up. Taking Hainan Free Trade Port as an example, although it has the most simplified negative list of foreign investment access and the first negative list of cross-border service trade in China, there is still a gap from the highest level of openness. We should learn from the highest international negative list management system, innovate and improve the content and form of the negative list of foreign investment access and the negative list of cross-border service trade, explore and implement the integrated management of the two lists, and focus on improving the openness of the service industry to the outside world, not only enhancing the development momentum, but also promoting in-depth reform. In addition, in a complex and volatile external environment, we must expand the opening up on the premise of ensuring security. We must adhere to the principle of being able to manage and open, take risk prevention and control as the most critical variable of success or failure, handle the relationship between the use of foreign capital and security review, and prudently relax the special measures