The common value of mankind is the value belief, value ideal, value standard and value orientation that reflect the interests and needs of the people of various countries, nations and regions in the world, and transcend the boundaries of specific subjects such as religions, classes, strata, and parties at multiple levels. The common value of mankind conforms to the ethical value thought of Marxism, and focuses on the values of Marx’s pursuit of free individuality and the freedom and liberation of all human beings. Marx’s ethical thought highlights the dual dimensions of "criticism" and "construction": while criticizing the social ethics concept of traditional western philosophy, it proposes to construct an ethical concept based on human needs and practical practice, and finally establish a value consensus that conforms to human life existence and the ideal of freedom and liberation. The community with a shared future for mankind and the common values of mankind have the same ethical orientation, which reflects the value needs of human survival, the development of international social relations, and the construction of world political order. The construction of common human values is a long historical process, and building a community with a shared future for mankind is an effective initiative to correct the direction of this historical progress. It reflects the practical basis and foundation of existentialism of the reality of common human values in a real, equal and just communication environment, and the constructive force for the creation of global ethical concepts and value forms. The "constructive worldview" is the conclusion drawn from the continuous expansion and deepening of the practice of socialism with Chinese characteristics. It is the philosophical thinking that meets the current common interests of people all over the world and relieves the development dilemma. Building a community with a shared future for mankind is an effective program for the practice of "constructive worldview". The purpose of building common values is to resolve the crisis of value differentiation and spiritual loss in the era of globalization, and to gather the ethical forces of human synergy to assist political governance to complete the integration of human society and meet the fundamental needs of the entire human race. The main body of common value construction is all mankind, which relies on the common practice of all mankind, and building a community with a shared future for mankind is the only way to reach a consensus on value. China’s initiative to build a community with a shared future for mankind is guided by Marxist ethical thought, based on people’s perceptual practice and inspiring people’s practice to freely and consciously tend to value consensus, making value consensus an essential force inherent in human existence and practical development, to strongly promote the construction of common values for all mankind.