Aimed at teachers participating in workshops on creative teaching, this study intends to analyze teachers' growth trends in creative teaching as well as to understand the effect of workshop participation in the initial stage and on the growth trend in creative teaching. During the research, four surveys were conducted in two years and three workshops were held, with 374 participants, among whom 83 teachers voluntarily participated in the three workshops on creativity in teaching. Using the growth model analysis in Hierarchical Linear Modeling, the results revealed that (1) teachers' intention to become creative in their teaching shows a linear growth trend and their skills in teaching creatively show an upward growth initially and then a downward trend, and (2) teachers who participated in the workshops outperformed those who did not on the growth trend of teaching creatively.