Insomnia belongs to the category of the "unable to sleep" in traditional Chinese medicine. Professor Huang Zhengde treated insomnia according to the theory of the Jingfang by using modified Ganmai Dazao decoction. Professor Huang advocated that treating insomnia by using Ganmai Dazao decoction is responded to the syndrome of morpheus sleep lightly. It has better clinical curative effect on the refractory insomnia patients with deficiency of Yin and blood of heart and lever, partial hyperactivity due to Yang deficiency, and disturbi...