The retired emperors were a special member of the ruling class who were not subordinate to the rank of laws and decrees. From 1086 to 1192, the retired emperors of Japan reached the peak of power. During this period, though their status seemed to be inferior to that of the current emperor, there was no substantial difference in the actual ritual treatment between them, even the former's treatment surpassed that of the latter. The relatively independent living environment is conducive to the growth of the retired emperors' power. The continuous improvement of their economic treatment provided material guarantee for them to carry out court administration. The improvement of the status and treatment of the retired emperors' wife, concubines, children, and their attendants, also reflected indirectly the growth of their power.