Insomnia refers to a kind of disease that is characterized by inadequate normal sleep， which is always caused by disquieting of heart spirit due to the imbalance of yin and yang. This disease closely associates with the five organs， while is most relevant to the liver， if we syndrome differentiate from the perspective of “dispersing stagnated liver qi for relieving qi stagnation”， “clearing liver-fire”， “calm the liver to stop the wind” or “nourishing liver” and combine with psychotherapy， better effect can be got.