To provide an elevator operation device and an elevator operation method for improving a service level by shortening one round time of elevators, and optimizing an operation characteristic of a general elevator and a using characteristic of a shuttle elevator.

This elevator operation device executes setting processing (Step S1) for setting the only one service floor mutually different with respective elevators, predicting processing (Step S3) for predicting an elevator for arriving first at a building lobby arranged in the aboveground vicinity among a plurality of elevators, determining processing (Step S3) for determining a destination floor of the elevator from the preset service floors according to a destination request, and allocating processing (Step S4) for allocating the destination floor determined by the determining processing to the elevator predicted by the predicting processing as a destination floor, and executes (Step S2) for operating the allocated elevator to the allocated destination floor.