“Decision of CPC Central Committee made on major problems about comprehensively deepen reform” of The Third Plenum of the 18th CPC Central Committee pointed out that “Mixed ownership economy which state-owned capital，collective capital and private capital are cross-shareholding and integrating is an important realization form of the basic economic system”，and it proposed to “vigorously develop mixed ownership economy”. Since then we should further improve the basic economic system putting the mixed ownership reform of state-owned enterprises as the important points. Mixed ownership is a kind of capital organization form of state-owned enterprises，and it did not want to change the nature of the state-owned enterprises and not to deny setting the public ownership as the goal. But it want to manage state-owned assets to realize the state-owned capital value and enhance its competitiveness by integrating other assets. Through the combination of different capital，the corporate ownership adjustment having been promoted under the market mechanism，the non-public sector of the economy having been encouraged to actively participate in the state-owned enterprise restructuring reform，and non-public economy having been in areas such as infrastructure，basic industries and public utilities，they were not only beneficial to promote state-owned enterprises to transform to modern enterprise system which can adapt to the market economy development requirements，more to the role of strategic investors. And they did good to expand the development of the private capital space and to achieve the complementary advantages，the allocation optimizing and the combination optimizing. <<