Abstract: The main subject of the article is a comparative analysis of the cultures of political relations between the Soviet Union (USSR) and the People's Republic of China (PRC) in the middle of the twentieth century. The author examines in detail such aspects of the topic as ideologization and authoritarianism, centralization of power, control over society and the phenomena of political cults. The article analyzes the key principles and values underlying the political systems of both countries, as well as the strategic goals and methodologies used to implement them. The author explores how ideological principles, power hierarchies and nuances of the political process influenced the formation of civic consciousness and behavioral paradigms of citizens. The article also examines the historical, cultural and geopolitical determinants that determine the similarities and differences in the political cultures of the USSR and the People's Republic of China, and their impact on the domestic and foreign policies of these states.  The research methodology includes a comparative analysis of historical sources and scientific works devoted to the political cultures of the USSR and the People's Republic of China, with an emphasis on the study of ideological, structural and socio-political aspects that shaped their development. The scientific novelty of the article lies in a comprehensive comparative analysis of the cultures of the political relations between the USSR and the People's Republic of China, which reveals both common features and unique features of each of them. For the first time, detailed parallels and differences between the two countries are considered in the context of ideologization, centralization of power and mechanisms of control over society. The findings of the study show that despite the common communist heritage, the political cultures of the USSR and the People's Republic of China developed along different trajectories due to national characteristics, historical events and internal political processes. The author argues that these differences have had a significant impact on the international positions and domestic policies of States. As a result, the article contributes to a deeper understanding of the processes of formation and evolution of the political systems of communist regimes, which is important for historians and political scientists studying the history and politics of socialist countries.