The concepts of self-healing, self-healing capacity, self healing control, smart distributed grid self-healing control, etc in smart distribution grid control system are introduced. Around the goal and implementation strategy of the smart distribution grid self-healing control system, smart distribution grid self-healing control system related key technologies are introduced, the function analysis of smart distribution grid self-healing control system is achieved, and smart distribution grid self-healing control system architecture, interface and related indexes are designed. The smart distribution network self-healing control system developed according to the proposed design has been successfully applied to the demonstration project site. Practical application in demonstration project shows that the smart distribution grid self-healing control system developed according to the proposed design can meet the actual demand of smart distribution grid self-healing control.