This systematic review provides an overview of existing evidence regarding the effect of touchscreen technology on young children's learning. Using PRISMA principles, we identified 53 studies in our review. The literature generally advocated positive effects of touchscreen devices on young children's learning with 34 studies reporting positive effects, 17 studies obtaining mixed findings, and 2 articles reporting negative effects. The factors/conditions of touchscreens affected young children's learning were classified into five categories including app features/contents, applied pedagogical approach, adult mediation, instructional grouping, and child age and previous experience/familiarity with touchscreens. Our finding has implications for different stakeholders by giving them insights into the impact of touchscreen devices on young children's learning under different conditions.