Developing a rational restoration strategy for black start of isolated microgrid helps to speed up the system restoration and reduce the loss. A serial restoration strategy, which is suitable for black start of microgrid, is proposed. Firstly, on the basis of the different characteristics between distributed generation (DG) and traditional unit, an evaluation model, which is used to assess the black start capability of DG and select the black-start generation, is established based on the variation coefficient method. Secondly, a network reconfiguration optimization model is built by taking the node importance and the line importance as the indicators, and the model is solved by genetic algorithm. Then, the restoration sequence of lines is determined by maximizing the restored generation capacity in per unit time. Finally, the simulation results verify the validity of the proposed scheme. This work is supported by National Natural Science Foundation of China (No. 51407128).