[SUMMARY]So far few studies have been reported on the origins of the educational psychology in the field of the history of psychology. In this paper, the author tried to examine the origin of the educational psychology on the basis of Charles's (1976, 1987) articles, which were only two studies on these fields. It is clarified that in the first half of nineteenth century, courses on psychology were offered as “mental philosophy” in normal schools, which could be considered as an origin of educational psychology; the “mental philosophy”, however, had its origin in philosophy of Scottish School of Common Sense; the course contents of “mental philosophy” were totally different from today’s educational psychology. More studies, especially on the lectures of psychology from 1870s to 1890s, are needed to reveal the origin of today's educational psychology.