Based on the previous studies to demonstrate the development of an academic discipline, the purpose of this article is mainly to intend to generalize the professional indicators of building up an academic discipline, with special reference to the subject of economics of education. Then, the necessity and importance of economics of education is stressed by analyzing its transformation in the Western academic world. Consequently, the eight indicators are supported to examine the professionalization of economics of education in Taiwan. Finally, some suggestions to improve this discipline, economics of education, are concluded.