With rapid development of digital technology and wide application of digital platforms， the Internet has been deeply integrated into people''s production and life in all aspects， and the world has been reconstructed at the digital level. Digital labor has become an important type of labor in the era of digital economy. Although there have arisen new forms and contents of labor， the logic of capital appreciation has not gone invalid. The social and economic life has not escaped the fate of alienation， and new forms of alienation have appeared. Marx''s theory of alienated labor has a strong theoretical vitality in all times and spaces， which can be used to dissect the basic mechanism of digital labor alienation and to better work out the sublation measures for labor alienation in digital times. Meanwhile， it is beneficial to understand the double effect and follow the trend of digital economy， to get rid of the evils of capitalist digital labor， and to promote the quality development of digital economy so that our goal of a powerful socialist country can be realized soon.