During the founding of the United Nations, both sides sent representatives to participate in the discussion on the Charter of the United Nations. Both sides played a role in the founding of the United Nations. China actively participated in the founding of the United Nations and put forward many constructive suggestions. As a colonial and semi-colonial country, China has a profound understanding of the experiences of those weak countries in the world. Therefore, China actively speaks for those small and medium-sized countries and expresses their voices and wishes. For example, in the process of formulating the Charter of the United Nations, the representative of China proposed that, first of all, the United Nations should be based on the principles of fairness and justice. Second, we should emphasize the role of international law and oppose the contempt for it. Thirdly, China is willing to promote economic cooperation among countries, and economic and social development should also be reflected in the development process of the United Nations. These views of China have been incorporated into the Charter of the United Nations. Without China's active and concrete participation, the United Nations is likely to become a club for the rich in western countries.