Abstract: Chen Yuan’s scholarly contributions were in the field of the Qing studies. From his earliest scholarship to his later years, his entire career was devoted to Qing history and Qing studies. He studied religion and political history, historical documents and explored new realms of Qing history.His research revealed the relationship among religion and Qing politics, and culture, thoroughly examined The Learning of the Four Treasures, produced scientific studies on the taboos on using the personal names of emperors and elders, and studied calendars and textual criticism. He had opened up a range of the Qing archival materials, utilized quotations from Buddhist, handbooks, and personal communications of Qing scholars. His contributions to Qing studies were outstanding.