The purpose of this study was to investigate the use of the six thinking hats model to enhance EFL creative writing skills of secondary stage students and their creative thinking skills. To fulfill the purpose of the study, three instruments were designed and used. The first instrument was a pre-post creative writing test for assessing the creative writing skills of secondary students, the second was using a rubric for scoring students' creative writings. The third instrument was a creative thinking scale. The study adopted the quasi experimental design. The participants of this research were (60) first year secondary stage students at Ahmed Hassan Ghonem School for girls, Mansoura, Dakahlia, Egypt. The research adopted the quasi-experimental design using two groups: an experimental group (n = 30), and a control one (n = 30). The researcher taught both groups: the experimental group was taught through the STHs program, while the control group was taught through the regular method of teaching. Research results revealed that there were statistically significant differences between the mean score of the experimental group and the control group students in the EFL creative writing skills tests; in addition to the creative thinking scale in favor of the experimental group. Moreover, the effect size of the STHs program was found to be high. Therefore, this research recommended using STHs program in teaching the four skills of the English language at different educational stages. These results showed that STHs had a positive effect on developing EFL creative writing skills of secondary students and their creative thinking. Key Words: Creative writing, six thinking Hats model creative thinking, EFL secondary school   Introduction and Background: Language is a human communication tool. Almost every day humans use language, receptively or productively. By using language, humans present their feelings, ideas, inspirations, imaginations, and convey these to the others. The process of learning and receiving information has become so easy and fast in nowadays.