Media literacy is an essential skill for living in the twenty-first century. School-based instruction is a critical part of media literacy education (MLE), while research on teachers' concerns and integration of MLE is not sufficient. The objective of this study is to investigate teachers' stages of concern (SoC), perceived need, school context, and teacher practices of the integration of MLE in primary schools. For this purpose, a survey was setup and 392 primary school teachers participated in this study. The results show that teachers' concerns of integration of MLE were generally oriented at the level of self-concerns. In the meanwhile, the integration of MLE was significantly related to teachers' concerns and perceived need for MLE. Based on the results of regression analysis, teachers' integration of MLE was significantly influenced by their SoC for MLE, school professional development support, and leadership support.