The Ritsuryo system specific to East Asia, although differing slightly with each period and dynasty, was generally comprised of the following four systems based on the ideas of odo omin and ikkun banmin, which became the basis of government.
東アジアに特有の律令制は、各時代・各王朝ごとに異なる部分もあったが、王土王民と一君万民の理念を背景として、概して次の4つの制度が統治の根幹となっていた。