Abstract: Platform capitalism, as a novel form of capitalism centered on data, driven by algorithms, and powered by network effects, has profoundly reshaped the modes of production and ways of life in modern society. The extensive application of digital technologies by platform capital has extended its influence beyond the purely technological realm to make it an effective tool for ideological permeation, thereby generating ideological risks. In concrete terms, digital technologies have intensified the covert nature of capital exploitation, algorithmic mechanisms have eroded the subjectivity of platform users, and platform monopolies have resulted in the illusory nature of digital interactions. Issues arising therefrom - such as the displacement of gatekeeping, digital fetishism and technological hegemony - continuously challenge the authority, legitimacy and security of China's mainstream ideology. To foster the healthy development of China's platform economy and effectively mitigate the ideological risks associated with digital technologies, it is essential to uphold the leadership of the Communist Party of China. This can be achieved through a four-dimensional approach encompassing ideological guidance, institutional design, technological governance and social action, so as to achieve an organic integration of platform governance and ideological risk management.

Key words: digital technology, platform capitalism, ideological risk, platform economy