Chinese Medicine is following the natural principle. It is the most historical, most systematic, and most curative medicine in natural medical science. Its philosophical foundation is formed by the theory of Yin Yang Wu Xing and Wu Yun Liu Qi. The natural animal, plant, mineral, sneaking creature, and water are used as the materials of medicines. The formation of formula has group spirit with cascade class. This paper gathers 50 pieces of representative prescription, and more than 80% of them have been verified clinically with real effect. It is said that Chinese Medicine is the pioneer and first ancestor of natural medical science.