The purpose of this study was to investigate the relationship among physical education instructor’s trust, education satisfaction and happiness of Cadets. In order to achieve this purpose, 341 Cadets were selected from studied in 2022 Korea Naval Academy by the convenience sampling method. A total of 328 surveys were used for the final analysis. Frequency analysis, confirmatory factor analysis, reliability analysis, correlations analysis, and structural equation model analysis were executed using SPSS 21 and AMOS 21 programs. As the results, the following conclusion was derived. First, it was discovered that the instructor’s trust had influence to the education satisfaction. Second, it showed that the instructor’s trust did give influence to the happiness. Third, it showed that the education satisfaction affect to the happiness.