The invention provides a method for generating a fault recovery scheme for load transfer when multiple buses are in loss of voltage. An external interconnection power supply is fully utilized. When the multiple buses are in loss of voltage, a buscouple power supply and the external interconnection power supply are matched for load transfer, in other words, loads of power-loss feeder lines without the external interconnection power supply are supplied by an instation reserve bus in a transfer mode, loads which cannot be supplied in a transfer mode have to lose power, and power supply of important loads is guaranteed in a priority mode; feeder lines with the external interconnection power supply are wholly supplied by an interconnection power supply outside a station in a transfer mode, and specifically a multi-fault power supply recovery method is adopted. Buscouple reserve capacity and the external interconnection power supply can be fully utilized, power-loss loads are recovered to the maximum degree, and the device utilization rate of a main transformer is increased.