This paper discusses the theory "syndrome elements and differention of syndrome elements" founded by Professor Zhu W enfeng, were summarized from clinical research progress related to its basic concept and development, syndrome elements and differention of syndrome elements, syndrome elements' mathematical research, the study of tongue and syndrome elements. The "syndrome element" may lead to a exact and standard treatment of TCM diagnosis was pointed out, but a unified, normative and agreeable research institute shoud be built up...