Aim: To explore the relationship between teachers’ creative teaching behaviors and sixth-grade students’ creativity, including creative behaviors and creative metaphors, and to investigate the mediating role of students’ creative self-efficacy. Method: We adopted The Test of Creative Teaching Behavior, the Creative Self-Efficacy Scale, the Runco Ideational Behavior Scale, the Creative Metaphor Task, and the question about family socioeconomic status to assess 112 sixth-grade elementary school students. Results: (1) Significant positive correlations were found between teachers’ creative teaching behaviors, students’ creative self-efficacy, creative behaviors, and performance on the creative metaphor task; (2) Students’ creative self-efficacy fully mediated the relationship between teachers’ creative teaching behaviors and students’ daily creative behaviors, but did not mediate the relationship between teachers’ creative teaching behaviors and performance on the creative metaphor task. Conclusion: Teachers’ creative teaching behaviors can positively predict the creativity of sixth-grade elementary school students, and there is a differentiated mediating effect of creative self-efficacy between teachers’ creative teaching behaviors and students’ creativity.