As we all know,kidney governs reproduction.However,studies have shown that liver also has a very close relationship with reproductive.Liver controlling dispersion,which can make essential qi distribute,and it also can store blood and regulate the volume of blood.According to the theory of "essence and blood sharing with the same origin”,if liver blood is enough,the essence of reproductive can be transformed.If the function of liver controlling dispersion is normal,qi movement is smoothness,qi and blood is harmonizes,Chong and Ren channels is coordination,so it can make man's sperm strong and a woman'menstruation normal.Liver channel surrounds the genitals,which directly contacts with reproduction.Therefore,there is the theory of liver governs reproduction.