The invention discloses a black-start power supply restoration method, and belongs to the field of electric power system safety defense and restoration control. According to the method, a power supplynetwork model is simplified in to a point and line module, a power failure area is divided, important degree of the areas is weighed, power is supplied for electric plants in the areas with large priority weight values by the aid of a selected black-start power supply, an electric plant is started and supplies power for other loads in the areas, electric plants in surrounding sub areas are started by the aid of the remaining capacity of secondary power supply restoration sub areas to drive power to be supplied for the loads of surrounding sub areas, and comprehensive running of all electric plants and loads in the all sub areas is finally achieved. According the black-start power supply restoration method, power can be preferentially supplied for the important loads, a grid structure is furthest restored, load power supply is restored, power supply is accelerated, so that running safety and running stability of a power grid are ensured, and power quality is ensured.