The twelve cap rank system was the first such system established in Japan and, following various court system changes and many twists and turns, developed into the Ritsuryo court rank system.
冠位十二階制は、日本で初めてつくられた冠位制であり、この後の諸冠位制を経て、様々な紆余曲折を経て律令位階制へ移行していった。