One of the major challenges which Thailand currently faces are poverty reduction and the gap between rich and poor. The North and North Eastern of Thailand still has more than 10% of poverty rate compare to 8% of the country average. This research study His Majesty King Bhumibol Adulyadej’s sufficiency economy concept and the use of sufficiency economy concept in the community development in the rural area of Thailand. Baan Mai Santi Village is the poorest village of Soong-Neun, Nakon Rachasima province which located in the North Eastern Part of Thailand. The purpose of this research is to investigate the economic and social information based on the sufficiency economy concept in order to develop the suggestion and community development plan. The interviews and focus groups were conducted in order to gain in depth information about sufficiency economy practices and activities. The 88 face to face questionnaires have been conducted in the village in order to understand the economic and social situation. The community would be benefit from the community development plan which focus on the development of training centre in order to generate incomes to the community.