Abstract
1. Background and Purpose : ${\ulcorner}Dong\;Eui\;Sa\;Sang\;Sin\;Pyun{\lrcorner}$is the one of widely used medical books in the Sasang Constitucional Medicine Academy, but there was not enough study of the author. Through the research of the ${\ulcorner}Won\;Ji-Sang{\lrcorner}$, the Author, We highly intent to utilize the book ${\ulcorner}Dong\;Eui\;Sa\;Sang\;Sin\;Pyun{\lrcorner}$. 2. Methods : We arranged Won Ji-Sang's life style with investigation of the Won Yong-Sa(Won Ji-Sang's daughter), Survivors's verbal evidence and related books. 3. Results and Conclusion : 1) Won Ji-Sang's Childhood Name was "Ill Sang", Pseudonym was "Duck Pil", Pen Name was "Sung Am". He was born in "Bong Yang Myune, Je Chon Gune, Chung Buk" at 1885's June 1st of the lunar calendar and moved to "Yeo Ju Gune, Kyung Gi Do" at 1910's, and passed away in "Nae Sa Ree, Whung Chun Myune, Yeo Ju Gune, Kyung Gi Do" at 1962's June 2'nd of the lunar calender, when he was 78s. 2) The outline of philosophy of Won Ji-Sang's was based of "Wha Seo Doctrinal Faction's ideology", which was connected with Kim Pyong-Muk, Yu Jung-Kyo, Lee Gun-Won, Rue Rin-Suk. 3) ${\ulcorner}Dong\;Eui\;Sa\;Sang\;Sin\;Pyun{\lrcorner}$ was published in 1929's when Won Ji-Sang was 45s. However, we couldn't find out how Won Ji-Sang got to know Sasang Constitutional Medicine, and whether or not he had relation with Dong Mu Lee Je-Ma. 4) Won Ji-Sang's medical experience might be started before he was 45, and real medical treatment began when he was 66.