Li Jun, an archiater of Fujian with unique academic thoughts, was an excellent physician and scholar in the late Qing and early Republican period of China. In his clinicsal practice, Li Jun paid attention to the qi and blood, following the principles of boosting qi, moving blood and tonifying blood and put emphasis on the fullness and smoothness of the blood vessels. He also paid attention to cold damage and warm disease and was expert at applying classical prescription for epidemic syndromes, writing 'Shanghanlunwenda' ('Questions and answers to treatise on cold damage') in collaboration with Guo Yong-gan. He modestly studied from western medicine and made comparative study between the theories of western medicine and TCM, advocating integration of China and West and compiling the book of 'Investigation on Japanese medicine', books collection in Ashikaga. At the same time, he wrote 'Neijingnanjingjingshi' ('Explanation on internal classic and classic of difficulties') and 'Gulun' ('Treatise on bones'), consulting Kewei-liang's translation book: 'Quantichanwei' ('Interpretation of the whole body').