Objective:To discuss national master of TCM and professor Zhang Zhen's medication laws and experience in treating insomnia using auxiliary platform for famous doctors.Methods:The symptoms,the prescriptions and the medications of 112 cases of insomnia which were recorded by professor Tian Chunhong between January 1,2009 and December 31,2011,were entered into"auxiliary platform for famous doctors",examined and checked;data mining and analysis of the associations between the core drugs and auxiliary drugs,between two drugs,the medicine and symptoms were carried out,and the results were analyzed in combination with Professor Zhang Zhen's clinical experience.Results:The data analysis has yielded 31 core herbs,and the top five ones were Gancao(glycyrrhizae radix et rhizoma),Gouteng(Uncariae ramulus cum uncis),Bohe(Menthae haplocalycis herba),Yehehua(Albiziae flos)and Fushen[Poria cocos(Schw)wolf.];Two-drug correlations yielded 8515 combinations,and the top five combinations were Shouwuteng(Polygoni multiflori caulis)and Suanzaoren(Ziziphi spinosae semen),Yanhusuo(Corydalis rhizoma)and Xiangfu(Cyperi rhizoma),Sharen(Amomi fructus)and Muxiang(Aucklandiae radix),Suanzaoren and Gouteng,Suanzaoren and Fushen;The concomitant symptoms with the frequency greater than 10% from the original prescriptions were palpitation,dizziness,weakness,weariness,tinnitus,vertigo and headache,the corresponding herbs were Maidong,Gegen,Xiangfu,Yanhusuo,Gegen,Fangfeng and Yanhusuo respectively.Conclusion:The drugs used in the treatment of insomnia by Profressor Zhang Zhen could disperse stagnated liver Qi and relieve Qi stagnation,adjust Qi movement and tranquilise the mind mainly,and the medication is characterized by natural pharmaceutical law,and selection of"hidden medicine",which could nourish heart Yin,and tranquilise the mind,in order to ensure the patients'smooth Qi movement and sound sleep,and he often applies the drug combinations to improve clinical effects for insomnia.