In the digital era,data commodification and tech innovations are reshaping capital.Digital capital boosts the economy by turning idle funds into active investments and expanding global markets.However,it also leads to new problems in societies,such as increased exploitation,consumption plunder,ideological control,and greater natural damage.Marx's theory of capital helps us understand digital capital's value and its pursuit of profit.To address digital capital's rise,we must update Marx's theory to ensure its benefits as a production factor while promoting a healthy development through institutional support and Marxist critique,aiding in building a modern socialist country.