Abstract: This paper proposes a scheme of power system restoration based on cloud computing which uses considerable computing resources in network for accelerating the optimal solution of network reconfiguration between islands.Depending on divide-and-conquer strategy,the distribution network that contains multiple micro-grids can be regarded as a group of sub-cloud areas.The service task in each sub-cloud is decomposed into multiple computing blocks that are then submitted to the computing nodes for parallel distributed processing.The process of task computing which is called service delivery can be used to all the sub-clouds.Many sub-clouds that can communicate each other can do the computing task for one goal.By the task decomposition and parallel distributed processing,cloud-computing theory can be used for service restoration.Results of numerical example analysis validate the effectiveness of the proposed method.