Objective: This research uses traditional Chinese medicine(TCM) inheritance support system to analyze the composing principles of the prescriptions given by Professor Yin Changjian for treating cirrhosis. Method: We collected the prescription used for cirrhosis cases

then created the related database to store the related information. We further utilized the TCM inheritance support system to analyze the composing principles. By using principle analysis

we revised mutual information

complex system entropy cluster and unsupervised hierarchical clustering to analyze composing principle. Result: We found 435 cases of prescriptions related to Cirrhosis. The frequency of each herb appeared in the database was calculated

and the most used 21 herbs including Amomi Fractus Rotundus

Galli Gigerii Endothelium Corneum

etc. The core combination is highly related to correlation between Amomi Fractus Rotundus and Amomi Fractus Rotundus or Polygoni Orientalis Fructus. Seven new prescriptions for different Cirrhosis stage are discovered. Conclusion: The approach used in this work

utilizing data mining methods(text mining and association relationship) based on TCM inheritance support system

clearly shows the composition principle of prescription for treating cirrhosis used by Professor Yin Changjian:the basical therapies are invigorating the spleen for eliminating dampness

invigorating the circulation of blood and removing dampness through diuresis

and resloving hard lump. Making a point of protecting stomach-Qi.Invigorating the spleen for resloving hard lump.Prescribing the herbs on the basis of diffent cirrhosis stage.