Abstract: The theoretical footstone of Deng Xiaoping's theory of "one-main-body and many-members" ownership structure is imbalance theory. The theoretical essence of it is to affirm the function of multi-economical-sectors in socialist economy. The theroretical stay-spot is that "one-main-body and many-members" ownership structure makes great motive force to the development of China's e-conomy in the present age.