This study aims at Play Immersion between trust in coach. This study took total 257 samples from male and female teenage taekwondo players at middle and high schools in Seoul and Gyeonggi province according to stratified cluster random sampling. Data from those samples were individually input in computer and analyzed via standard multiple regression analysis using SPSS 14.0 for Window, which is the statistical program. As a result, this study came to the following conclusions: Play Immersion between trust in coach are related.