1. Object of research Dongyi Soose Bowon Sasang Chobongyun and DongmuYugo were written by Lee je-ma befare Dongyi Soose Bowon. He explained in full detail Sasang Constitutional symtoms more than symtoms in Dongyi Soose Bowon. I tried to find his early medical views on Sasang Constitutional disease. 2. Method of research It was researched as contents with his writing surh as Dongyi Soose Bowon Sasang Chobongyun and DongmuYugo. 3. Results and conclusions (1) Dongmu was tried to explain the Sasang Constitutional physiological and pathological symtoms with ordinary symtoms. It is a his own implementation that he made an analysis of Sasang Constitutional symtoms. (2) We can take advantage of the contents clinically which has full of expression that there is a difference between the constitutional symtoms. (3) It is a guide post that can be expected the appearance of disease even if it were not in poor health