Abstract:Ekiken Kaibara (1630-1714) left behind many works, but among which scripture commentaries are extremely rare. He wrote only Da Xue Xin Shu (New Annotations for Da Xue ) for beginners learning Da Xue (Zhang Ju), a basic work for moral enlightenment, and made great efforts to make it published. The commentaries extracted by Ekiken all come from Yuan and Ming Dynasties rather than Japan. In other words, Ekiken accepted Zhu Xi’s philosophy in the intellectual space of “Four Books of Ming Dynasty” in East Asia. Although working hard, he gave up the idea of publishing Da Xue Xin Shu due to inadequate demands. Later, Ekiken turned to publishing enlightenment books of Confucianism in vernacular Japanese, and kept writing. The reason for this change lies in the appearance of commercial publication media and the audience of informative books. Ekiken played an extremely important role in the formation of the new “wisdom sphere” by utilizing the new media called the commercial publication.