This study is aimed at understanding the religious psychology of junior high students. In order to do so, literature survey and interview methods are employed to construct the conceptual framework and to collect research data. Several suggestions are provided for the social studies of nine-year integrated curriculum reform. The adolescence is critical stage of human beings, and it had many special mental characteristics and development tasks. Since the adolescence is to a great extent caused by growth patterns, several characteristics of the growth patterns in adolescence make it a very complex process. Thus, the systemic and complex integration of the religious psychology for the instruction of social studies will help teachers design nine-year integrated curriculum. It will also improve teaching methods of social studies, which are based on the adolescence's religious psychology. Therefore, to understand their students' religious psychology would become teachers' significant task.