The purpose of this study was to explore the relationships among principal’s transformational leadership, teacher’s well-being, and school innovative management in Taipei municipal junior high schools. Three related questionnaires were used to measure the major variables while data collected from a sample of teachers in 59 Taipei municipal junior high schools. Collected data were analyzed by SPSS/PC to conduct descriptive statistics, t-test, one-way ANOVA, and SEM analysis. It was found that principal’s transformational leadership has significant direct effects on the school innovative management. Also, tested by the mediated-effects model, it was found that principal’s transformational leadership has significant indirect effects on school innovative management mediated by the factor of job achievement of teacher’s well-being.