This study explored the structural relationship between student-faculty Interaction, learning flow, and academic achievement in music major. This study developed research problem setting and measurement tool through literature review. Also, the questionnaires were collected for the students attending the music college in Korea and the data were collected and analyzed. As a result of the analysis, First, in the music major, acceptability, intimacy and reliability as student-faculty interaction have positive effects on learning flow. Second, the reliability of student-faculty interaction has a positive effect on academic achievement. Third, learning flow has a positive effect on academic achievement. Finally, it was found that the student-faculty interaction has a significant effect on academic achievement through mediation of learning flow. Through this study, we confirmed the importance of student-faculty interaction and learning flow to improve academic achievement in music major. This study suggests the implications for improving the competitiveness of music major.