The aim of this research is to make it clear how the custom of retirement from the headship of family has been succeeded and changed in Iki island. The summary of this research is as follows;
It is thought that the custom of retirement from the headship of family in Iki island has been succeeded, from the separate living type has been shown in over 60 percent of the examined two-generation families. However this custom has shown the aspect of the diversification, because the custom of economic independence and separated eating style has been collapsing in some districts. According these changing, the aspect of the act area in the residential site also has been diversified and can be classified into three groups, the type of mutual independence, the type of mutual help and the type of communal life.
