Promoting Mental Health (PMH) through Buddhadhamma is researched by qualitative methodology using the technique of phenomenological and followed Interpretative Phenomenological Analysis (IPA) with an in-depth interview and semi-structured forms under the research and development approach by a focus group to create a guideline for the PMH project. Participants are individual 27 interviewees consisting of interview 20 participants from the elderly club members and 7 specialists for a focus group. The purpose of the study is to analyze the important base features of PMH, to analyze the general condition and behaviors for PMH involving practicing in Buddhadhamma belief, and to create a guideline for PMH. The result found the significance of PMH behaviors involving the major of Buddhadhamma focuses on Trisikha. Trisikha approaches daily life, especially by observing the precepts and practices mindfulness regularly and the experiences of facing mental health problems raised when working or doing business, especially during the economic crisis were down. Significant behaviors through the experience of self-promoting mental health were found most of all mentioned the utility of Trisikha is upraising mindfulness.