The "Mai Dong (bing) Fa" (pathogenesis of channel or meridian disorders) was proposed in the concept by Huangfu MI (from the Jin Dynasty), and was classified and elaborated according to the characteristics and comprehensive analysis of symptoms and signs collected by inspection, auscultation and olfaction, inquiry and pulse taking and palpation in his book Zhen Jiu Jia Yi Jing (A-B Classic of Acupuncture and Moxibustion). In-depth exploration on the academic origin of "pathogenesis of meridian disorders" may help us understand the connotation of meridian problems once again. Firstly, when the meridian falls in disorder, resulting in abnormal functional changes and then a series of symptoms and signs arose. Secondly, generally, not just one meridian falls in disorders, but more meridians are simultaneously involved, which needs to be differentiated through comprehensive analysis of the four diagnostic methods and meridian identification. Thirdly, based on the diagnosis of the disorders of the related meridians, appropriate acupoints are selected. Correct understanding about the "pathogenesis of meridian disorders" is definitely helpful to our observation and summarization of modern clinical diseases and theoretical sublimation, and also favorable to guide our clinical practice and clarification of meridian-collateral's implications.
Keywords: A-B Classic of Acupuncture and Moxibustion; Auscultation and olfaction; Inquiry; Inspection; Pulse taking and palpation; “Mai Dong (bing) Fa” (pathogenesis of meridian disorders).