The aim of the study was to investigate the effect of the environmental education programme, which was based on shared book reading, on the awareness and attitudes of preschoolers towards the environment. In the research, an experimental design with pretest-posttest control group was used. In the research, story-based environmental education programme was applied to the experiment group for ten weeks. As a result of the study, when the pre-test and post-test mean scores of the children in the experiment group who participated in the story-based environmental education practices were compared, a significant difference was found in favour of the post-test. When the experiment and control group posttest mean scores were compared, it was found that there was a significant difference in favour of the experiment group. In line with these results, it can be said that story-based environmental education practices positively affect children's environmental awareness and attitudes towards the environment.