Land has a very close relationship with humans. The existence of customary rights shows that customary rights have a place and recognition from the State as long as in reality they still exist. The adat community of Gunung Sahilan village, Gunung Sahilan sub-district, Kampar district, is one of the indigenous communities that has a customary land conflict. With regard to the use and management of customary lands in the area of the indigenous communities of Gunung Sahilan village, Gunung Sahilan sub-district, Kampar regency there should be coordination with ninik mamak. but in reality, the role of ninik mamak is no longer applied.This type of research can be classified in the type of sociological (empirical) legal research, because in this study the authors directly conduct research at the location or place of study in order to provide a complete and clear picture of the problem under study.This research was carried out in the Sahilan Darussalam region, Kampar Kiri Kampar Regency, because the location of the Gunung Sahilan Kenegerian Customary Institution, while the population and sample were the Gunung Sahilan Kenegerian Customary Institution, Ninik Mamak, the Sahilan Darussalam Customary Density, the Sahillan Darusalam Village Head and the Indigenous Peoples kenegerian Sahilan Darussalam. Data sources used are primary data and secondary data. Data collection techniques in this study were interviews, questionnaires, and literature review. The conclusions that can be obtained from the results of the study are: First, the management of customary land in indigenous peoples in Kenegerian Sahilan Darussalam, Sahilan District, Kampar Regency has begun to fade with the times and has started not referring to the provisions in the customary law of indigenous peoples in Kenegerian Sahilan Darussalam, Sahilan District, Kampar Regency.Keywords: Existence, Landslides, Indigenous Peoples, Kenegerian Mount Sahilan