The structure of studies of moral education is basically interdisciplinary; it includes moral philosophy, psychology, and educational research. This article systematically analyses the structure of studies of moral educational from the vantage points of philosophy of science. Among the various theoretical frameworks in the field of philosophy of science, this article mainly utilizes the perspectives of Lakatos's research program. In particular, the article considers the relations and interactions between different fields, including moral philosophy, psychology, and educational research. Finally, the potential impacts of the new trends emerging from natural sciences that seem to be challenging to existing theoretical frameworks of moral education are examined using the vantage points of philosophy of science.