Abstract: Since the 18th Party Congress, the Party Central Committee with Comrade XI Jinping as its core, has scientifically judged the development trend of the times, profoundly summarized the experience and lessons of development at home and abroad, and combined with the actual development of China at the present stage, proposed XI Jinping's sharing thought. XI Jinping's sharing thought is a major change in the concept of development in China. It explains the scientific connotation of shared development from four aspects:sharing by all people, full sharing, co-construction and sharing, progressive sharing. It reflects the basic characteristics of systemicness, practicalness and affinity to the people, and deepen our party's understanding of the law of economic and social development. It is of great significance for China to gradually achieve common prosperity and promote the common development of all countries in the world.