The aim of this study considers the sustained factors and the contents to form sustainable society for the solution of the environmental problem, and offers the basics documents. Three division is as follows when we examine the sustained factors in the Iwaishima-village. 1. About “a house” in the old materials use of the house. 2. About “Nerihei streets” in the Iwaishima-village. 3. About “a village” formed by “the KABU” of the group of the mutual support. We thought that the Iwaishima-village were sustainable society formed by an invisible system.