Marx used materialistic dialectic to detect and analyze mankind society and its development and concluded the scientific theory of social development.

Development is the core concept of Deng Xiaoping s Theory, which, essentially speaking, is about the social development in China.

A basic shortage of the traditional theory of social development,amely,it only concern society "how development",and doesn t focus on "which one is good".

In his theory,Marx had not explicitly put forward the ideas of modernity and cultural prospective,but such ideas had been implied in his theory of social development.

Jiang Zemin inherits and promotes Marxist theory of social development by bringing forth several new views, such as the multiplicity of the world, the realization of the increase of national productivity by surpassing the bounds, and mankindoriented social development.

It persists in the social development theory of Marxism.

In the social development theory of Marxism,man s all-round way development,cordial interaction between the nature and the human beings,harmonious developing including economic and society are the sources of scientific development concept.

The social development theory of Marx brightly penetrates the all-around development of human beings,which incarnates the good interaction between nature and human beings,and the spirit of the harmonious development between economy and society.

This essay makes a pilot study on the relationship between knowledge-based economy and Marxism, which includes the following aspects: the relationship between knowledge-based economy and the theory of social development, the theory of value of labour force, the distribution system according to amount of labour and the theory of ownership.