Exploring Marx's theory of time justice from the perspective of the concept of time,constituting a necessary task for interpreting Marx's ideas on justice.First,collaborative labour time is a measure of equal exchange justice.The social necessary labor time in a commodity society is a measure of the matching degree between the value created by labor and the reward.The collaborative labour time in the primary stage of communism is a measure of labor and income.Secondly,the time for free and comprehensive development is an inherent requirement of substantive justice.In the advanced stage of communism,the labor time and non labor time of workers reflect the"distribution according to their abilities and needs",combining formal procedural standards with the satisfaction of results,which is the content of substantive justice.Thirdly,historical time is the unfolding form of intergenerational justice.Whether it is the development of society towards communism or the responsibility of previous generations for future generations,it needs to gradually unfold in the evolution of intergenerational time,reflecting intergenerational justice.These three levels of temporal justice are unified in terms of time basis,value stance,and internal structure,which also provides important inspiration for the justice principle of socialist modernization construction.