The objectives of the research were as follows: to study principles for explaining kamma in Theravada Buddhist scriptures; to study the explanation of kamma among the elderly Buddhists in Ban Lawa community Mueang Pia Subdistrict, Ban Phai District; to analyze the explanation of the kamma of Buddhist elderly people in Ban Lawa community, Mueang Phia Subdistrict, Ban Phai District, Khon Kaen Province. This study was carried out by means of qualitative research through an in-depth interview of 28 key informants. The obtained data were interpreted by descriptive analysis before making conclusions, discussions, and recommendations. The research results were as follows: The principles of explaining kamma in Theravada Buddhist scriptures: Kamma is an action that is both good and evil.