Social media tools are increasingly used in child’s language and literacy development in early years. However, few researchers shed light on effectiveness and the practice that the EC professionals and teachers have adopted in ECE settings and other related contexts. This scoping review synthesized and evaluated the literature on social media integration in language and literacy development in ECE in the last decade, to provide a clearer picture on what social media tools were used, how they were used, and whether they were effective. Results showed that a wide-range of social media tools were used in diverse learning activities; however, few studies designed the learning activities with the guidance of an evidence-based teaching method or pedagogical framework.