This thesis entitled “Study the Effort in Buddhism that appeared in Phaya-I saan”, is aimed following the objectives; 1) to study the effort in Buddhism; 2) to study the background and value of Phaya I-saan, and 3) to study the effort in Buddhism that appeared  in Phaya I-saan. The quality research method was selected by using documentary and field research by interviewing

      This Research result found that:

      The effort is an attempt, exertion, energy, vigor endeavor and perseverance. The effort that appeared in Buddha ‘s teachings as; practice in right way (apannapadipadha), perfect confidence (Vesarajjakaranadhamma),the powers (pala), factors of Enlightenment (Bojjanga), the true dhamma (sadhamma), Noble eightfold path (maggha),virtues which  make for protection (Nathakaranadhamma), and ten perfections (Parma),etc.

      Phaya is the local philosophy, intellectual, wisdom which using for educate and teach the people at the Northeastern of Thailand (I.saan). The dialect speech was used, the character of Phaya are; beauty dialect words, short proverbs which suitable in hearing but teaching words hidden. All dialect Phayas can be used according to each times, person and place; which reasonable proverbs in its, also many values; as pass on good  feeling, educate, persuade, heritage language, reflect the social situation and for entertainment.      

      Effort in Buddhism that appeared in Phaya l-saan as like; in the way of life, good deed activity and effort in education. All of them, the people in Nikhumsang touring Lamdomnoiy, Sirinthorn District, UbonratchathaniProvince well understanding in applying for daily life.