Through a re-analysis of Marx’s theory of productive labor, it is known that the triple stipulation of capitalist productive labor, the basic criteria for the production of digital labor, and the inherent laws of labor time conversion and their practical manifestations under different social systems are obtained. It is suggested to strengthen the basic position of productive digital labor in China, guide the correct direction of labor time conversion and dynamically optimize the rational allocation of labor time. 

　　Editor: Zhong Yao  Liu Tingting 

　　From: Theoretical Horizon.2024.No.8.