Objective To analyze the clinical medication rule of Chinese medicine master Duan Fujin in treating chest stuffiness and pains with Qi deficiency and blood stasis syndrome. Methods A total of 160 prescriptions from Professor Duan for the treatment of chest stuffiness and pains with Qi deficiency and blood stasis syndrome. The SQL SERVER database and WEKA open source data mining software were used to discover the association between drugs, and then analyze the rule of prescription.Results Radix Glycyrrhizae ...