Abstract: In the digital age, the collusion between capital and digit is invading people's social lives and causing a series of practical problems. In this context, foreign left-wing scholars have critically examined the domination and exploitation of digital capitalism, proposing alternative digital socialist solutions such as "digital/communicative socialism", "platform socialism", "algorithmic socialism", and "digital post capitalism", forming different types of digital socialist theories. These theories attempt to return to the discourse system of Marxism in the digital age, and some of their requirements reflect the value proposition of scientific socialism in a sense, as well as express the reasonable demands of the foreign left for a society without exploitation. However, digital socialism has not proposed fundamental changes to capitalist production relations, nor has it found the correct methods and approaches to achieving socialism. It is difficult to form a powerful social movement and political force, and it has not advanced towards the complete liberation of people. Therefore, the essence of digital socialism is democratic socialism, instead of scientific socialism.