Abstract: With a focus on the theme of deepening economic systemic reform and promoting Chinese-style economic modernization, this paper makes a historical review upon comprehensive deep reform in economic structure and system since the 18th National Congress of the Communist Party of China (CPC), analyzing the development of the Chinese-style modernization of economy, agriculture, industry, science and technology, and infrastructure as well. Currently, deepening economic structural and systemic reform and promoting Chinese-style economic modernization comprehensively, as one of the main tasks of Chinese modernization, has become the key to the modernization achievement. As planned, the year 2035 will see China basically complete her realization of socialist economic modernization: the overall national strength will increase significantly; China's economic aggregate and per-capita income of urban and rural residents will reach a new level; breakthroughs in core techs will be achieved and thus make China one of the most innovative countries globally. According to the resolution of the Third Plenary Session of the 20th CPC Central Committee, this paper contributes to the development of China's economic productivity by demonstrating a comprehensive analysis of all the paths to modernization.