With the appearance of the Sengoku daimyo, the shugo-ryogoku system, for which the existence of shugo-daimyo was prerequisite, was changed and dissolved in fact, replaced with the system called "daimyo-ryogoku sei" (daimyo-ryogoku system).
戦国大名が登場すると、守護大名の存在を前提とした守護領国制も変質し、守護領国制は事実上解体されて、大名領国制と呼ばれる体制へ移行した。