RESUMO
We studied the amount of trace elements in the traditional Chinese medicine Wuji Baifeng Wan by cluster analysis, and found that the clustering results of the trace elements in Twelve Wuji Baifeng Wan (the southern preparation) and Wuji Baifeng Wan (the northern preparation) were not in the same group. In this paper, AAS was used for the determination of trace elements in Wuji Baifeng Wan and its preparation. The results showed that there were great differences between Twelve Wuji Baifeng Wan and Wuji Baifeng Wan , while the difference between Chinese Taihe Chicken and Native Chicken was slight. So we drew a conclusion that the great differences between Twelve Wuji Baifeng Wan and Wuji Baifeng Wan were caused by other medicine, not in its preparation.