In order to better understand the relationship between educational psychology research and educational reform, this essay reviews the development of educational psychology studies in the last 20 years in China. The study shows that: (1) Rapid development has been made in the areas of establishing discipline systems; (2) Research fields have been expanded and research directions have been localized; (3) The theoretical basis for quality education has been derived from education psychology studies; (4) The psychological foundation for curriculum reform and instruction has been implemented, and (5) China has committed to serve and expand current educational practices.