The current research aims at developing lateral thinking skills among female students of the College of Education for Early Childhood through a training program based on the theory of inventive problem-solving (TRIZ) . For this purpose, the experimental research approach of the experimental and control group design with pre-and post-measurements was utilized. The research sample comprised (140) female senior students at the College of Education for Early Childhood, Minia University who were divided into two groups (70) for the experimental group and (70) for the control group. This research was conducted at the College of Education for Early Childhood, Minia University during the first semester of the academic year 2020/2021. To collect data, the current research utilized the lateral thinking test (prepared by the researcher, 2020) and the training program based on the Theory of inventive problem solving (TRIZ) for developing lateral thinking (prepared by the researcher, 2020) . Results revealed that there were statistically significant differences between the means of the scores of female students (College of Education for Early Childhood) in the post-measurement of the control and experimental groups in the lateral thinking test in favor of the experimental group. Besides, there were no statistically significant differences between the means of the scores of female students (College of Education for Early Childhood) in the post- and follow-up measurements of the experimental group in the lateral thinking test.