Qi transformation disorder of Sanjiao （triple energizer） is closely related to senescence and related diseases.The authors summarize the latest 10 year’s understanding and the research development of the theory of Sanjiao

and find 4 main aspects that have an important guiding significance for clinical practice

i.e.Sanjiao is both the place of birth and channel to run for Qi

blood

thin and thick fluids as well as essence; Sanjiao is another form of contact among five Zang-organs and six Fu-organs other than the five elements; Sanjiao executes the order of the pericardium

exercising the function of "monarch"; the Qi transformation in Sanjiao is the foundation of life activity.