A fire evacuation operation system for group-controlled elevators, in which floors to be served are divided into multiple service zones, multiple elevators which serve each of the service zones from an entrance floor are provided, and each of the elevators is caused to stop at a nearest floor thereof when a fire detector installed on each floor of a building detected that a fire had broken out, characterized in that the system comprising: fire-zone rescue floor setting means which, in the event of a fire, causes all elevators to stop at a nearest floor thereof and thereafter sets a rescue floor, for each elevator in a zone including the floor on which the fire broke out, on a transit floor above the zone served by the relevant elevator or a transit floor below the zone served by the relevant elevator according to the position of the floor on which the fire broke out; nonfire-zone rescue floor setting means which sets, for a zone above the zone including the floor on which the fire broke out, a rescue floor on a transit floor between the relevant zone and a zone which is by one story lower than the relevant floor; and sets, for a zone below the zone including the floor on which the fire broke out, a rescue floor on a transit floor between the relevant zone and a zone which is by one story higher than the relevant floor; and evacuation operation instruction means which assists people who are present in the building to evacuate by causing all of the elevators to reciprocate between an entrance floor, which becomes the evacuation floor, and the rescue floor, wherein in a case where the floor on which the fire broke out is a top zone, the fire-zone rescue floor setting means sets a rescue floor on a transit floor below the top zone as the rescue floor for an elevator which serves the top zone, wherein in a case where the floor on which the fire broke out is not a top zone and the floor on which the fire broke out is above a zone including the floor, the fire-zone rescue floor setting means sets a rescue floor on a transit floor above the relevant zone as the rescue floor for an elevator which serves the relevant zone, and wherein in other cases, the fire-zone rescue floor setting means sets a rescue floor on a transit floor below the relevant zone. fire-zone rescue floor setting means which, in the event of a fire, causes all elevators to stop at a nearest floor thereof and thereafter sets a rescue floor, for each elevator in a zone including the floor on which the fire broke out, on a transit floor above the zone served by the relevant elevator or a transit floor below the zone served by the relevant elevator according to the position of the floor on which the fire broke out; nonfire-zone rescue floor setting means which sets, for a zone above the zone including the floor on which the fire broke out, a rescue floor on a transit floor between the relevant zone and a zone which is by one story lower than the relevant floor; and sets, for a zone below the zone including the floor on which the fire broke out, a rescue floor on a transit floor between the relevant zone and a zone which is by one story higher than the relevant floor; and evacuation operation instruction means which assists people who are present in the building to evacuate by causing all of the elevators to reciprocate between an entrance floor, which becomes the evacuation floor, and the rescue floor,