This essay not only systematically readjusts the thinking in Marxist theory that the levels of productive forces and the nature of productive relations act as a measure to classify the social productive epoch,but frames two basic concepts——the social productive epoch and the social economic formation,and discusses th.

On the intrinsic contradiction of production relations;

Frequent change in production relations and variations of political and economic life;

The sustainable development idea from the perspective of customer satisfaction coordinates human relations and production relations perfectly.

Secondly, evolutional rules of EPMM system are analyzed according to basic principles of productive forces and productive relations.

Economic globalization has become a tendency of economic development,in which capital flow,embodying special social productive relations,does speed up the tendency.

A harmonious society demands a harmonious production relationship inherently.

Economics should focus its study on the special movement of production relationship under different social patterns.

To achieve social harmony,we adopt the practice of constructing production relationship initially,but the result is a relative fairness and low efficiency.