Data colonialism is a kind of general description of colonial phenomenon in the era of digital capitalism, which mainly achieves all-round exploitation on users through digital platforms and network equipment. In the critical paradigm of capitalism proposed by western left-wing scholars, data colonialism and information politics have a certain theoretical relationship, such as both taking "information" as the basic element of their theoretical construction, and have similar views on the capitalist possession pattern of digital platforms, especially emphasizing the importance of establishing an open and shared platform, both of which provide a theoretical premise for their comparative study. Examining data colonialism on the basis of information politics needs to clarify the dialectical relationship between the two: On the one hand, information politics needs to consolidate its own theoretical foundation based on Marxist "meta-narrative" about the transformation of production relations; on the other hand, the critique against data colonialism also entails drawing theoretical nourishment on human liberation in the digital age from information politics to expand its own theoretical depth and critical dimension.