It is well known that the concept underlying oriental medicine is to approach the living body as a microcosm. The model currently used shows that all five basic elements are interrelated. Because only relative directions between the five basic elements are shown, these diagrams can not describe the whole. However, complex systems of the control theory in engineering using the current model remain complicated.In this study, we designed a new model to synthetically interpret the relations among the five basic elements that are used in complex systems. As a result, the new model can describe drastic changes in the creative cycle and the destructive cycle. Furthermore, the model can faithfully express whole changes of the five basic elements and simultaneously describe the relation of the creative cycle and the relation of the destructive cycle. It is suggested that the use of this new basic model may help explain the disease model and treatment theory.

In oriental medicine, we consider the living body to be a microcosm and understand it as a general complex of systems. The rhythm of the five basic elements in the living body controls these complex systems and maintains the whole by adding restrictions to chaos. Therefore, when distortion of the five basic elements occurs, the living body develops disease. Under these conditions, the first, 69th chapter of “Nan Ching” describes the therapy principle useing the mother and child relationship of the creative cycle in the five basic elements, and the second describes the therapy principle of individual meridian diseases. Accordingly, we developed a therapy model for deficiency-pathogen, excess-pathogen and original-pathogen and tried to interpret the 69th chapter.
The results showed that there is no distortion in relationship of the destructive becoming successful condition of therapy in these models. In addition, it was thought that the original-pathogen is the therapy principle of individual meridian diseases, and these changes suggested the formation of assumptions regarding tonification and sedation therapy for deficiency-pathogen and excess-pathogen. These results suggest that the 69th chapter is a therapy principle based on the relationship of the creative cycle through the whole organism.