This paper examines Takakusu Junjiro's in-depth discourse of the role Buddhism plays in transforming Indian culture from an Indo-Aryan one to an Eastern one. According to Takakusu Junjiro, in detaching itself from Brahmanism in fifteen respects, Buddhism broke free from Western thought and gradually orientalized, so that it not only changed the course of Indian history and culture but also evolved into “central Asian thought”.As a Buddhist scholar, he also compared and contrasted the characteristics of Indian, Chinese and Japanese Buddhism. Seeing Asia as culturally distinct from the West, Takakusu Junjiro' study of Indian Buddhism leads him to the idea of Buddhism as representing “central Asian thought” and thus finds its place in Oriental studies.