The "alienation of labor" is the key to the transformation of Max s modern critical paradigm,which expresses itself in two aspects: from of the research dimension of "national economics" to "moral.

These thoughts on social harmony derive from Marx s criticism of the alienation of labor and private property.

In 1844 Manuscript of Economics and Philosophy, Marxdidn t satisfact with reviewing the fact of alienation of labor, but try toshow a beautiful society through criticizing alienation of labor, whichmostly embody in the communist society where the contraditionbetween people and nature, people and society, people and people, eople s body and soul really resolved.

By interpreting Marx’s alienated labour theory in " Economics philosophy manuscript in 1844", this thesis analyzes the theory crux of Marx’s alienated labour.

The author thinks that Marx s alienated labour theory is a peak of thoughts of alienation which plays important roles in all three parts of Marxism.

The problem,however,is how to understand the real meaning of this statement,which requires that we should begin with understanding and grasping the duality of the logic of alienated labour.

Analyzing the alienation of technology from labor,it is deemed that the large-scale capitalistic applications of technology were the precondition for technology alienation,where the root cause was the labor alienation under conditions that the mode of capitalistic production was predomi.

In his early work Economic and Philosophic Manuscripts of 1844,Marx has put forward the theory of labor alienation and its sublation,which has expressed his strong desire of social justice.

In his Economics Philosophy Manuscript in 1844 Marx analyzes the practical labor alienation, Proves the human practical essence and studies the relationship between alienation and human practical essence.