[Objective] The purpose of the study was to illustrate the correlation between microelement contents in heat-clearing Chinese herbal medicines and their curative effects.[Method] With microelement content as index,the microelement contents in the 10 heat-clearing Chinese herbal medicines were analyzed by principal component analysis,clustering analysis and software SPSS.[Result] The results from correlation analysis indicated that the frontal 4 principal factors contained 83.898% information about microelem...