The research of "Da Dai Liji" was very few. Or from the Does fine academic. Or from the Lu Bianzhu. So I had researched the Tsengtzu day circle of the "Da Dai Liji" a point of view the Qi theory . And discussion the nature Qi theory, the Ritual music Qi theory and the wise man Qi theory in the Tsengtzu day circle of the "Da Dai Liji". I take the line of the Qi theory from the Pre-Qin to see the seat of the Tsengtzu day circle of the "Da Dai Liji". Hope my research can promote the study of the "Da Dai Liji".