Enabling black-start restoration of power-losing microgrids can speed up the restoration process of the power system and help mitigate the socio-economic losses caused by major power outages. Thus this paper proposes a two-stage black-start restoration method for microgrids considering the participation of multi-type heterogeneous resources. First, the restoration characteristics of multi-type heterogeneous resources are analyzed to determine their operational constraints in the black-start restoration process. Second, an evaluation index to improve the importance of existing nodes and line weights is proposed, and a two-stage optimization model for microgrid black-start restoration is constructed. In the first stage, it optimizes the restoration scheme of micro-sources to maximize the available generation capacity of the microgrid, and in the second stage, the restoration scheme of the load is optimized to maximize comprehensive load restoration. Finally, the results of case studies based on the 21-node system show that the proposed model can improve the black-start restoration efficiency of the microgrid and mitigate the losses caused by microgrid outages.