A harmonious life between religious people is one of the shared ideas in the context of Bhinneka. Indonesian society from the past has different cultures, religions and social norms but is a distinctive and worthy of wealth to be preserved and preserved. This study aims to raise the profile of local tradition-based inter-religious harmony in Batang Beruh Village, Sidikalang District, Dairi Regency. The methodology used is a descriptive qualitative research that discusses the sociology of religion. Based on the data agreement with the triangulation technique, data reduction was carried out and concluded about the glue of harmony in family relations, local wisdom (Mardang, Pudun, Markebas, Mamiring, Sikatasatu, and Gugu), looking for houses of worship with assistance, related houses that mingled and gathered together. This condition is proof that interfaith believers accept, accept and accept fully acknowledge the same creation of God; need each other with each other.BAHASA INDONESIA