By analyzing the national textbooks of Chinese Medicine Diagnostics 1 st to 9 th edition

the authors explore the change of Zang-fu viscera syndrome differentiation in modern Chinese medicine diagnostic theory system.Zang-fu viscera syndrome differentiation is independent of Zang-fu viscera-channel system

and it changes in the aspects of contents and presentation forms. Meanwhile

syndrome types integrate and amplify constantly. By reviewing the evolution and development of Zang-fu viscera syndrome differentiation

the authors put forward that using the dynamic evolution view of Yin-Yang and five-phase to improve the syndrome differentiation system of Chinese medicine diagnostic theory.