A scene-sound set operating method adapted to a portable device is provided. According to the method, the portable device receives an operation command from a scene-sound set system that provides a plurality of scene-sound sets; and a personal terminal device and the portable device simultaneously log in the scene-sound set system and correspond to each other in the scene-sound set system. The scene-sound set system transmits the operation command to the portable device according to a selection signal which is transmitted from the personal terminal device. The selection signal indicates selection of at least one of the scene-sound sets. According to the operation command, the portable device automatically downloads the selected scene-sound set from the scene-sound set system. The downloaded scene-sound set is installed in the portable device.