This is an examination of the continued dynamics and adaptation of the Phuan ethnic group in Thailand, especially how their customs have changed according to evolving social and environmental conditions. The objective was to understand the factors that have affected the dynamics and adaptation of the group in order to analyse the inheritance of their cultural practices and encourage accurate dissemination of Phuan traditional knowledge. A qualitative research method was used in four Phuan communities from different regions of Thailand. Data was gathered from observations, interviews and documentary research. The findings indicate that there are significant similarities between the cultural adaptations of Phuan people in each of the four areas, although there are also notable regional differences. There are dangers of staged authenticity in the pursuit of cultural conservation, especially through provincial or regional exhibitions. Instead, the researchers recommend a more participatory and organic approach.