In the early Heian period, the Ritsuryo system (a system of centralized government based on the ritsuryo code) of centralized governance structure from the former period (the Nara period) was basically continued with partial amendments.
平安前期は、前代（奈良時代）からの中央集権的な律令制を、部分的な修正を加えながらも、基本的には継承していった。