the purposes of this research to examine the conformity of the model with the causal factors that have generated empirical information and study the factors that influence, both direct and indirect effort persistently to learn of hill-tribe children study grade 6 of school in Office of ChiangRai education services area 2. samples used in research as hill-tribe children study grade 6 at a school affiliated with Office of ChiangRai education services area 2 during 2013 academic year, number of student 384 poeple from 14 schools, were selected by the multi-stage random sampling technique, and hill-trbe children live in Mae Suai District, mae Laos disrict and wiang PA Pao district. the tool used in this research is the query contains. Characteristics and hunger for knowledge questionnaire questionnaire and study causal factors influencing knowledge aspiration feature is learning achievement motivation. Targets for the future. Self esteem The belief in their inner powers. Social support Support from family, teaching The atmosphere in the classroom and in the school environment, in which there are confidence values equal 0.9033 0.1827 0.8140 0.6753 0.8250 0.6915 0.8391 0.8310 0.6887 and 0.7859 respectively.