After the investiture of the Crown Princess to her daughter the Imperial princess Abe and her enthronement as Empress Koken (749), Kogogushiki (the Queen-consort's Household Agency) was renamed to Shibi chudai (the office handled the principal empress Komyo's affairs) and her nephew FUJIWARA no Nakamaro was assigned to its chief to implement various measures.
娘である阿倍内親王の立太子、およびその後の孝謙天皇としての即位（749年（天平勝宝元年））後、皇后宮職を紫微中台（しびちゅうだい）と改称し、甥の藤原仲麻呂を長官に任じてさまざまな施策を行った。