Abstract: In the report of the 19th National Congress of the Communist Party of China, Xi Jin-ping first put forward the new proposition of "political construction of the Party". The pioneers of proletarian revolution,represented by Karl Marx, Lenin and Mao Ze-dong, carried out a lot of practical explorations, which laid an important theoretical foundation for the Communist Party of China to carry out the Party's political construction after the founding of new China. During the past 70 years, the Party's political construction has undergone four stages of development: initial exploration during the period of socialist transition, tortuous progress during the period of socialist construction, the beginning of a new period of reform and opening up, and the comprehensive strengthening in a new era of socialism with Chinese characteristics. The article studies the historical experience of the Party's political  construction over the past 70 years, in particular the effective measures and typical practices in the fields of ideological and theoretical support, political line formulation, study and education, and system building. It has important value to promoting the political construction of the Party in the new era.

Key words: political construction of the party, original theories, historical process, basic experience