The research is aimed at exploring how the belief system of Bali Aga community? how the strategy for retention the identity of the Bali Aga community? and (3) how the implications of preserving the identity of the Balinese Aga community?. The grand theories used in the present study included structural functionalism, phenomenology, and religious. Data were collected through observation techniques, in-depth interviews, and document studies. Having analyzed data is conducted interpretive description techniques. Based on the results of the research conducted in Pedawa Village, it was found that the people currently still preserve their ancestral cultural heritage in the sense that the traditions and religious systems. They inherit are still functional in managing their socio-religious life. The adjustments are indeed conducted in order to preserve the continuity of the traditions that they do. The concept of AGIL namely Adaptation, Goal, Integration, and Latency shows its existence in the field. The study also found that there was an exciting kind of awakening to strengthen the religious system and traditions. They inherited unlike reviving the sacred dances they had, and the tradition of planting of gaga rice had been increasingly difficult to find. It is one of the important facilities in the Bali Aga ritual system.