The "ShikLyoChanYo", written in 1460 by JunSoonYi (全循義), master court doctor in JoSeon (朝鮮) Dynasty, is the very first specialty publication of Korean dietary treatment existing today. Both Chinese and Korean scholars have assumed that this book had been lost long time ago. In November 2003, however, a Korean philologist found a version of the book, Yangyang (襄陽, a district name in Korea), and this book has attracted a lot of interest of Korean traditional medical science and agricultural science since then. This paper is to dissert the document of food therapy from the book with profound document study and statistical analysis in the fields of traditional Chinese medicine and traditional Korean medicine on dietetics. It completes the study of the application of all the dietetic treatments according to symptoms of diseases and all the plants and medication applied to cure chronic conditions that are clinically examined for the purpose of food therapy. A general survey on sundry records related to this food therapy of the "ShikLyoChanYo" has been done to make this dissertation and it carried out a statistic analysis of all the dietetic mixing technique of all plants and medication. Among other symptoms of illnesses from the book, there are 7 frequently addressed ailments chosen from the aspect of food therapy - a stroke, a disease diagnosed by thirst, a serious cough, an ache resulting from numbness, a disease relating to stomach, blurry vision and weak hearing, and a drinking related disease. This part is to discuss these illnesses and how to cure them with food based on its characteristics and rules of application.