Abstract: In the new era, Xi Jinping made a series of important expositions on the proposition of  "why to achieve common prosperity,what kind of common prosperity to achieve and how to achieve common prosperity" in the practice of governing the country,which has formed a rich theoretical system.These important expositions,originating from the theory of common prosperity of classical Marxist writers,are rooted in China's excellent traditional culture,and are the historical continuation of Communist Party of China's unremitting pursuit of common prosperity since its founding.They are realistic responses to the development situation and development goals in the new era,and their core contents cover the profound connotation,great significance,institutional guarantee,strategic steps,practice paths,methods and principles of common prosperity.Xi Jinping's important expositions on common prosperity promote the new development of Marxist theory of common prosperity,provide theoretical guidance for gradually realizing the common prosperity of all the people and theoretical reference for solving the problem of worldwide poverty and exploring new forms of human civilization,thus they are of great theoretical significance and practical value.

Key words: Xi Jinping, common prosperity, the new road of Chinese-style modernization