[Objective] The aim of the research was to discuss the relationship between trace elements and the efficacy of Chinese herbal medicine.[Method] Based on the known contents of 7 kinds of trace elements in Codonopsis pilosulae,Cinnamomum cassia,asarum,Gentiana scabra and Cornus officinatis,the factor analysis was made on them by using multivariate statistical method.[Result] The first 3 main factors reflected more than 92.88% information included in the original variable.Cu and Zn were the variables that had ...