The purpose of this study is to examine the mediating effect of strength utilization in the relationship between elementary school teachers' perception of strengths and flourish. To accomplish this objective, an offline survey was conducted with 54 elementary school teachers working in the K region. In addition, an online survey was concurrently conducted with 279 members of a nationwide community exclusive to elementary school teachers. This approach facilitated a comprehensive data collection. This information is intended for inclusion in the abstract of the paper. The final collection of the data from 328 respondents were analyzed for the correlation between variables using SPSS 21, and the mediating effect of strength utilization in the relationship between strength perception and flourish was confirmed using AMOS 22.0. The results of the analysis are as follows. First, it was found that the perception of strengths, the utilization of strengths, and flourish all have a positive correlation each. Second, in the relationship between the perception of strengths and flourish, it was found that the utilization of strengths has a complete mediating effect. This study suggests that in order to enhance the flourish of elementary school teachers, it is necessary to consider both strengths recognition and strengths utilization simultaneously. It also proposes the need for the development of institutional-level group counseling programs targeting elementary school teachers. Lastly, the significance of this study lies in conducting research on the flourishing of elementary school teachers, a relatively under-researched area, and enabling a structural understanding of how strengths influence flourish. This content is intended for inclusion in the abstract of the paper.