Abstract
Jang Nam's opinion is that Yin-Yang of pathogenic factors change following to the Yin and Yang of human body. As the pathogenic factors injure the human body, the conditions of diseases become different to the inborn constitution of human. Therefore the main principles of remedy set up the diagnosis on the YINㆍYANG & the strengthㆍweakness of constitution. This diagnotic points are body formal distinction, flesh hardness and softness, face color and form, skin color. Moreover he arranges the 4 type of the hole-body constitution based on the Seop-Gye's the guide of clinical differentiation of syndromes(臨證指南); Yang-Strength and Yin-weakness(陽盛陰虛), Yin ㆍYang-strength(陰陽具盛), Yin-Strength and Yang-weakness(陰盛陽虛), YinㆍYang-weakness(陰陽兩虛).