Nei Jing is the most important foundation of modern Traditional Chinese Medicine theory. ”From the Symptoms and From the Root Cause for Shao Yin” was stated in Suwen-Zhizhen Yao Dalun, which has become the guideline for the disease treatment of later physicians, particularly in the scope of Shao Yin disease specified in the six meridian syndrome differentiations. In ”Nei Jing”, it means the development process of Shao Yin disease occurs from the symptoms or from the root cause. The root cause of Shao Yin is fire and heat, and the symptoms of Shao Yin is water and cold, so Shao Yin disease might has cold transformation or hot transformation.