The purpose of this study is to reconsider the grammar category of "ida" by comprehensively checking the partal setting of "Ida" discussed in North and South Korea after examining the process of establishing "Ida" in North Korean grammar. In North Korea, 'Ida' was set as bakkumto(바꿈토) with '-(u)m',' and '-ki', and in South Korea, it was set as a predicative case marker. There is a similarity in North and South Korea in that the grammar category of 'Ida' is set to maintain system consistency with sentence components. However, setting "Ida" as bakkumto or a predicative case marker has problems. In this paper, it is discussed that it would be better to set it as a "dependent (assisted) adjective" according to the typological view, morphological and syntactic characteristics.