The liver is significant in storing blood, controlling blood sea, maintaining close contact with the thoroughfare vessel and managing conveyance and dispersion. The liver physically pertains to yin and functionally to yang. It prefers free action and detests depression. Dysfunction of the liver in conveyance, or stagnation of qi transforming into fire, or stimulation of liver fire due to rage may consume liver yin and lead to hyperactivity of liver yang, or asthenia of yin and hyperactivity of yang which will all affect the th oroughfare vessel and bring about such disorders like irregular menstruation, metrorrhagia and metrostaxis, dysmenorrhea, amenorrhea, morning sickness and eclampsia gravidarum. 

So regulation and nourishment of the liver is also one of the important therapeutic methods for the treatment of gynecological diseases. In the middleaged women, menstruation, pregnancy, delivery and breast-feeding frequently impair blood and tend to result in asthenia of liver blood and exuberance of liver qi. So regulation and nourishment of the liver is especially important for the treatment of middle-aged woman. However, in actual treatment, the therapeutic method should be selected according to the conditions of the patient. 

For example, failure of the liver to convey should be treated with dispersing therapy; liver depression transforming into fire or liver fire due to rage can be treated by clearing and purgative therapy; consumption of liver yin or deficiency of liver blood can be treated by softening and nourishing therapy; hyperactivity of liver yang can be treated by suppressing therapy. In a word, the purpose of regulating the liver is to balance liver qi and make liver blood sufficient.