The article summarizes and introduces the clinical experience of professor Zhao Zhifu treating insomnia during the past two years.The medication was based on" TCM Rigid-Gentle Syndrome Differentiation" and then describes the details of common syndrome-classifications of insomnia in the modem times,including yin deficiency of heart and liver (and also with other syndromes),upflaming heart and liver fire,binding depression of liver Qi (and also with other syndromes),etc.The main point of differentiation in the clinics is emphatically explained and the pathogenesis the onset of insomnia is discussed.Furthermore,the therapeutic principle and character of medication are introduced.