Although the discourse system of China's educational economics has a short history of only 20 years, it has gained an important position in the discourse system of pedagogy. This system consists of rich discourse branches including the relations between education and economy, educational investment and educational finance, educational cost and educational benefit, changes and innovation in education system and utilization and efficiency of educational resources. All the above discourse branches show various characteristics in different stages. From their development and changes, the following features of discourse system of educational economics can be drawn: the specialty of discourse, the trend of time of discourse themes, the positivism of discourse expressions and the applicability of discourse nature and contention of Chinese perspectives. To further improve the quality of the discourse system, the emphasis of educational economic studies should be laid upon the improvement of research attitude, theoretical basis, content and methodology.