This report is the approach to the restraining conditions of island soceity and it's development from the following aspects;
1. Impact of international condition
2. Regional develpment policy of government
3. Restraining conditions of remoted island
Especially, this report puts emphasis on the depopulated problem of satellite island in Okinawa prefecture. In order to find out some solutions, this report tries to come up with a conception of the “island minimum”, meaning social minimum for survival of island soceity.