The term. visceral manifestation first appeared in Su Wen  Liu Jie Zang Xiang Lun (The 9th chapter of Plain Questions),which not only discusses the concept of human viscera and the integrity of the human body that centers on five zang organs, but also interprets the relationship of viscera to nature with theories of four seasons, yin-yang and five elements.

Visceral manifestation, unique to traditional Chinese medicine,1s a systematic theory about human physiology and pathology. Through the long-term observation of physiological changes of the human body, according to the thinking method of traditional Chinese medici Chinese medicine, it studies and infers the morphology, location , physiological Junctions and pathological changes of Viscera, the close relationships among viscera and the close relationships between viscera and external environments.

This chapter consists Of five parts: brief introduction, five zang organs, six fu organs, extraordinary fu organs and relationships among viscera.