Liver in Chinese medicine is to promote circulation of blood and metabolism of body fluid: Blood circulation and body fluid metabolism all depend on the propelling function of the visceral qi, the normal flow of which relies on the regulating and dredging function of the liver which are prerequisite to constant blood circulation and normal metabolism of body fluid. If the movement of qi is abnormal due to failure of the liver to dredge and regulate, it may affect blood circulation and body fluid metabolism, bringing on corresponding pathologic changes. For example, if the liver is weak in dredging and regulating, the activity of qi will be stagnated and blood circulation will be obstructed, leading to blood stasis; or if the liver is hyperactive in dredging and regulating,  blood will flow adversely with qi,  causing haematemesis; or if qi activity is obstructed, water passage will be stagnated, leading to intercostal neuralgia.

In Chinese medicine, when treating a disease, the doctors take everything into into consideration, including climatic changes, environmental variations, emotional changes, the diet, the urine and the stool, the sleep, and the disorder of sex life. That is the feature of the Three Pathogens Theory in TCM. This etiology doctrine built on the basis of the macro methodology entirely differs from that of Western medicine. It is on the basis of the microscopic and pathologic anatomy. But it is exactly a biological, psychological, social and new medical model that Western medicine is attempting to pursue. While Chinese medicine established its own system with this medical model two thousand years ago.

Chinese doctor doesn’t considers static anatomy as a starting point for understanding the diseases, and does not rely on detection equipments. On the contrary, Chinese doctor depends on the unique ways of TCM diagnosis to experience and study the human dynamic life information. Also it is based on syndrome differentiation to guide the disease therapy. This method not only can save a lot of examination fees for patients, but also can help doctors exchange with patients more closely, thus reflecting a real humanistic spirit.