The scope of internal medicine of Chinese medicine is very wide. According to the classification of pathology and etiology, the scope of internal medicine of Chinese medicine can be divided into two categories, one is externally-induced fevers, and the other is internal injuries and miscellaneous diseases. 1. Exogenous fever: TCM internal medicine can treat diseases caused by feeling external evils, including typhoid fever and warm diseases. 2. Internal injuries and miscellaneous diseases: Chinese medicine believes that the human body is a whole centered on the internal organs, with the blood and fluid as the material basis, and the meridians as the pathway, connecting the limbs and bones, the five senses and nine orifices. Therefore, internal injuries and miscellaneous diseases, including viscera dysfunction, blood and fluid generation and operation of the transmission and distribution of malfunction, meridian pathway obstacles. Therefore, TCM internal medicine can treat liver diseases, heart diseases, spleen diseases, lung diseases, kidney diseases, qi, blood and fluid diseases, and tendon and collateral diseases.