Choi, Choong-Lyeol. 1998. The Inherritance of Presupposition in Belief-sentences. Studies in Modern Grammar 14, 205-221. The aim of this paper is to provide a framework to explain the inheritance of presuppositions in belief-sentences. We examine the combinatorial approaches(Karttunen(1973), Karttunen and Peters(1979)), the cancellation approaches(Gazdar(1979)), and the procedural approaches(Dinsmore(1979)) of the earliert imes and show their defects. And we inquire into the cognitive approach which is based on worlds, cognitive principles and interpretation principles. With help of those concepts, the cognitive approach can explain the intricate problems which happen around the inheritance of presuppositions. This means that our linguistic theory should be built on the idea that our language ultimately contributes to the expansion of our cognitive worlds.