After the police and judicial chief Kebiishi, which was not originally specified in the ritsuryo system, was established in the early ninth century during the Heian period, Danjonokami became an honorary post given to the Imperial family member with little authority.
平安時代の9世紀初頭に令外官の検非違使が設置された後は、皇族に与えられる名誉職のようになり実権は余りなかったという。