Bronze mirror is considered to be an unearthed article characteristic of Yayoi period along with bronze bell, and discussions on the mirror and bronze bell cultural region, and others according to the distribution have been under way.
銅鏡は、銅鐸とともに弥生時代を特徴づける出土品とされ、分布により銅鏡・銅鐸文化圏などが論じられている。