Damage expansion by wild boar (Sus scrafa) and local farmer's intension to counter measure in Gogo-shima and Tsuru-shima islands were studied based on hearing and questioner survey. In Gogo-shima, sporadic damage phase exists for about 6 years after confirming inhabitation. After damage increase phase of about 4 years, grate damage phase has not yet started in 2017. In Tsuru-shima, a very small island, wild boar has immigrated but not colonized. Local government and university worked together to make opportunity for local people getting information and learning about wild boar. As results, local people tend to understand wild boar expansion, but to depend just only capturing as well as local government and farmers' cooperative organization.
