There are dispersed settlements in Iki island all around. Their beginning and actual conditions are yet unknown in detail. In this study, the natural and the geographical features of this island and the allotment system of land in the Edo period are investigated in relation to the settlement pattern. And it is made clear that "the land use pattern of Iki" is a set of the land use consisting of a wind break at the back, a dwelling lot, a vegetable garden in the front and the scattered farmland. In conclusion their problems in planning are considered.