Just at that time, Chokushisho (Bureau of Edicts) was established as an economic organization to support the key position of the administration of Empress Shotoku and priest Dokyo; In contrast, Naijusho was considered as a military organization to support the key position of the administration--It is considered that the administration formed these offices as a kind of high ranked court official organization to maintain their own political and military power based in the Grand Council of State to cope with the main steam of the FUJIWARA clan (potential rival of the administration) and the Imperial family's influence.
同じ頃、称徳天皇及び道鏡の政権中枢を支える経済機関として勅旨省も設置されており、対して内豎省は政権中枢を支える軍事機関として構想され、太政官を拠点に政権とは潜在的な競争関係にある藤原氏主流や皇親勢力に対抗するための政治・軍事力を保持するために組織された一種の家司機関であったと考えられている。