K0006(K6)of Qingshihuang’s Mausoleum was excavated in July 2000, from which 12 terracotta officer figures were unearthed for the first time. This article presents the preliminary research of 19 samples from 8 individuals. Their More’s hardness and water absorption are approximately the same as that of the terra cotta warriors, which implies the similarity of their pottery properties and conservation measures. Both the result of cluster analysis and principal component analysis indicate significant homology of clay materials among individuals of K6 and K1,K2,K3,especially with that of K3. K3 and K6 were simulations of key departments of Qin government and the number of figures was limited. It is quite possible that clays from one single spot could supply enough material for two pits. The supposition that the clay spots and workshops were designated based on the rank of the figures is yet to be proved.
