Elevator system

An elevator system is provided with a double-deck elevator having a plurality of number machines of an elevator car, an elevator-taking destination floor registration device, and a group management control device. The elevator-taking destination floor registration device can register one of the odd floor and the even floor as the destination floor under the condition that a destination call is not registered at a special call terrace, and can register both the odd floor and the even floor as the destination floor under the condition that the destination call is registered at the special call terrace. Furthermore, the group management control device is provided with an allocation control unit that allocates, as a special call response number machine, the number machine that responds to the destination call registered with the special call. Furthermore, the allocation control unit temporarily allocates one of the cars of the special call response number machine as a special call response car that responds to th