Objective: Data mining method was adopted to analyze and summarize the medication regularity in the prescription drugs for lung cancer by the theory of ‘Fuzheng Quxie and Guben Qingyuan’

and discuss the mechanism of its action. Method: Effective prescriptions for treating lung cancer collected in outpatients of doctor Lin hongsheng in the department of oncology of Guang'anmen Hospital from August 2015 to August 2016 were screened out

and the ‘traditional Chinese medicine (TCM) inheritance auxiliary system (V2.50)’ was used for data mining and analysis of medication regularity. Result: A total of 524 prescriptions were involved in 182 literatures. The TCMs with frequent use of the prescriptions under the guidance of the theory of ‘Fuzheng Quxie and Guben Qingyuan’ were collected. The result preliminary proved that ‘Fuzheng Quxie and Guben Qingyuan’ was used in lung cancer throughout the TCM therapy. Conclusion: The theory of ‘Fuzheng Quxie and Guben Qingyuan’ gives guidance to the treatment of lung cancer in different stages

the treatment of modern medicine is dominated by ‘Fuzheng’; when the treatment and complications of modern medical treatment cannot be tolerated

the therapy of ‘Quxie Qingyuan’ TCM is mainly used; after the use of modern medical treatment

in the maintenance and consolidation period stage

both ‘Fuzheng Quxie and Guben Qingyuan’ were given equal stress. The medication regularity was summarized to further verify the mechanism of ‘Fuzheng Quxie and Guben Qingyuan’ throughout the whole process of the TCM treatment of lung cancer.