The purpose of the study was to develop EFL creative reading skills of preparatory school  Students through inquiry based learning. To accomplish this purpose, the present study followed the pre-post, quasi-experimental-control group design. Towards this, the researcher used two groups: experimental and control groups. Conducting the current treatment, a number of sixty EFL third-year students from  Sheet El Hawa  preparatory school, Kafr Saqr Educational Directorate, Sharkia Governorate, Egypt, were intentionally allocated in two groups, thirty  students for the experimental group and thirty for the control one. Characteristically managed a pre and post-testing technique for the purpose of data gathering and analyzing. The researcher designed an EFL creative reading test, creative reading rubric to measure EFL creative reading skills before and after the treatment. Generally, the current study was conducted over a period of six weeks; each task took about 50 minutes to be fully implemented through the second term of the academic year 2022-2023. Finally, the results of the study showed that the inquiry based learning  had a positive effect on developing the EFL creative reading skills  of the preparatory school students.