<p>"Moidon" is a forest of the old folk belief to be left on Satsuma and Osumi Peninsula in Kagoshima, and it is enshrined as the standpoint of the community. Moidon tends to disappear in recent years, it is necessary to consider the effect of a public measure such as cultural property and the necessity of other conservation system. In order to clarify the effects of designation of cultural property and issues to inherit Moidon, we investigated the transition of spatial composition, flora, events such as the festival, and management of the Moidon, and resident consciousness against the Moidon designated the cultural property of Ibusuki City. The results show that the subsidy from the city works effectively in management of the Moidon, and the designation contributes to the recognition of residents to the Moidon. It is suggested that consolidation and simplification of festivals related to the Moidon is advanced, and continuance of the festival and management has been difficult. It is necessary to spread understanding and to enlarge participants of Moidon.</p>