It was created on May 21, 702, when OTOMO no Yasumaro, AWATA no Mahito, TAKAMUKO no Maro, SHIMOTSUKENU no Komaro, and ONO no Kenu were allowed to participate in the government, and Sangi was established as an official post in 731.
大宝2年（702年）5月21日に大伴安麻呂、粟田真人、高向麻呂、下毛野古麻呂、小野毛野を政治に参議させたのが創始で、天平3年（731年）正官として参議が成立。