Insomnia is a common disease.Most TCM physicians treat it based on Yang excess and Yin deficiency.However,in clinic,Yang deficiency insomnia patients are not uncommon.By analyzing the relation between Yang-qi and insomnia,the authors put forward that the main pathogenesis leading to Yang deficiency insomnia is Yang deficiency of heart,spleen and kidney.Thus the treatment is starting with warmly invigorating heart,spleen and kidney Yang,or assisting suppressing hyperactive Yang with heavy prescription,or adding herbs of benefiting Qi,tranquillization,dissipating phlegm and regulating Qi.It migh...