The construction of political system is the core element of modernization, and the shape of political system is an important element of social form. Since the 18th National Congress of the Communist Party of China, the Central Committee with Xi Jinping as the general secretary has been focusing on the core topic of political system construction and established the practical direction of the construction of socialist political system with Chinese characteristics in the New Era: adhering to the new route of Chinesestyle modernization, following the endogenous law of political system creation, clarifying the nature, function and content of political system construction through the modernization of national governance, placing the reform of the Party and state institutions under the Partys overall leadership, developing the wholeprocess peoples democracy and improving the system of the mass as true masters of the nation, realizing the structural optimization and system adjustment of power relations with power under total control.