The present study was conducted to investigate the effect of the Peaceful Life Skills Education Program on the social adaptation and skills of preschool children. In the study, semi-experimental model with pretest and posttest control groups was used. The study sample included fifty 5-year-old students attending Malatya Civil Servants Kindergarten during the 2013-2014 academic year. The study group and control group included 25 students each. The Social Adaptation and Skills Scale and a Personal Information Form developed by Işık (2007) were used as data collection instruments. The study group students were instructed with the Peaceful Life Skills-Based Education Program developed by the author, one hour per week for 12 weeks. The control group students were instructed based on the conventional curriculum. Data analysis was conducted with the t-test. The study results demonstrated that the implemented education program had a positive effect on social adaptation and skills of preschool children.