Objective To determine the contents of calcium, magnesium, iron, copper, zinc and manganese in 11kinds of Chinese tradition
medicines. Study the interrelation between
trace elements , macro elements and the therapeutic effect through method of blurred classification and built a new method for evaluating quality of Chinese tradition medicines.Methods The contents of 6 kinds of elements were determined by FAAS . By range analysis, correlation coefficients and relative fuzzy matrix in were calculated to combin Ca/Mg and Cu/Zn. By data extreme difference method,standard processing of statistical target was carried out while by the quantity product method relation
coefficent of classified samples to define blurred matrix was calculated .Results Cluster in Nine kinds of medicines was similar when relative coefficent was 0.50; cluster in 5 kinds of medicines was similar when relative coefficent was 0.60; cluster in 2 kinds of medicines was similar when relative coefficent was 0.80. Conclusion The contents of trace elements and macro elements are rich. Their therapeutic effect is similar when the relative coefficient is considerably great . This suggests that trace elements have much to do with the therapeutic effect. It provides a scientific basis researching new types of medicines superior in trace elements.