Hun Su Yi Sheng Lu as a representative work focused on health preservation in the Song Dynasty, a period of highly-developed health preservation culture. It was written by Liu Ci, following the theory of "food is the basis of life" and recorded a great number of principles and methods of diet health preservation. It demonstrated the relationship between diet and the five organs of the human body, diet and disease prevention, diet and time adjusting and diet and risk factors. It provided significant reference for diet health preservation currently.