I investigated practice fields of city bands and grasped the state of a room in a performance, and considered problems about safekeeping and import of musical instruments to use for an exercise. It is necessary for depots of musical instrument cases besides performance area. Scale of an exercise room can think about 2.5 square meters per one person. In public cultural facilities and other institutions, it is necessary for safekeeping and an import method of large-sized musical instruments to be considered.