On the other hand, with the decline of the shoen and consequent rise of the so, the social position of local lords and the kokujin class rose and strife broke out in the provinces, and the trend grew toward unilateral rule of fiefs; thus with the growth of feudal daimyo, the Shugodai disappeared along with the Shugo daimyo.
いっぽう、荘園の崩壊による惣の発達によって在地土豪や国人層の社会的地位が上昇し諸国で紛争が発生すると、領国を一元的に支配する傾向が顕著になって戦国大名が成長し守護大名とともに守護代は消滅していった。