A display system includes a head-mounted display device and an input device for operating the head-mounted display device. In this display system, the input device is mounted on an arm or a leg of a user and has a movement detection unit which detects a movement in a circumferential direction of the arm or the leg where the input device is mounted. The head-mounted display device displays an operation screen where an operation is accepted, and switches the operation on the operation screen according to the movement detected by the movement detection unit.