DAI Lisan was one of the four famous traditional Chinese medicine(TCM)doctors in Yunnan Province. Hededicated his entire life to study and practice TCM, also the development of clinical and educational career. During his 49 years' career, DAI Lisan has saved many seriously ill patients' lives, gaining him great reputation in Yunnan. He has unique and valuable experiences. He believes that Yang syndrome is easy to cure. On the contrary, Yin syndrome is hard. Therefore, he was good at the method of "turning to Yang syndrome", namely, he would use high-dose of heat and warm drugs to turn Yin syndrome to Yang syndrome, then use clearing-heat drugs to treat Yang syndrome. He is good at "Opening door" method which is applied to smooth ,Qi, of Taiyang in order to expel pathogen ,Qi,. Additionally, he canonizes Yang ,Qi, and is good at using warm drugs with high dose, such as Fuzi(Aconm Lateralis Radix Praeparaia), Ganjiang(Zingiberis Rhizoma), Rougui(Cinnamomi Cortex), etc. He values the healthy energy. Additionally, he inheritances classic prescriptions and uses them flexibly according to patients' syndromes. He likes food therapy besides medicines. Furthermore, he creates many new and effective prescriptions, such as Xiaobai Fuzi Tianma Decoction(小白附子天麻汤), Linggui Jiangban Decoration(姜桂苓半汤), Sangye Lianbei Powder(桑叶连贝散), etc. Overall, summarizing and studying the relevant contents has a positive effect on the improvement of clinical effects.