Smart distribution grid is the focus of the future smart grid construction, it will be on the operation of power system protection and control has the profound influence. Distribution grid after intelligent will not only have all kinds of intelligent electrical equipment, but also allows the DG and Microgrid wide access, further boosting supply and distribution of intelligent requirements on power grid. This paper introduces the main research focus on the process of intelligent distribution network development in recent years, with the ultimate goal of self-healing, expounds the aspects of distributed and renewable energy access, power supply and demand side management, self-healing control content, also pointed out that the intelligent distribution network has not been resolved and the possible research direction of the next step.