The research aimed to study context of the current stability situations and community relationships along the Thailand-Cambodia border, to find out local diplomats on stability promotion along the Thailand-Cambodia border, and guidelines on stability development through local diplomats along the Thailand-Cambodia border. This research mainly used to investigate a qualitative research method. It consisted of in-depth interview with 140 key informants in two areas, 70 people in each area at Dan Klang village, Phu Pha Mok Sub-district, Kantharalak District and Sare Pai village, Phrai Phatthana Sub-district, Phu Sing District, Sisaket Province.