It is a Tenno-ryo (Emperor's mausoleum), which was identified and determined as the Shared Mausoleum of Emperor Tenmu and Empress Jito (meaning that it was determined as an imperial mausoleum).
天皇陵であり、天武天皇・持統天皇合葬陵に比定・治定（陵墓と決定されること）されている。