A total of 22 mudstone and shale samples collected from the Cambrian Kaili Formation and adjacent intervals of eastern Guizhou Province , including the Miaobanpo, Danzhai, Zhuping and Tunzhou sections, were prepared with specially developed palaeopalynological methods. The results show that there is higher diversity of microfossils in the Miaobanpo section than those from other sections. Most of them are common types of filamentous algae and of acritarchs, particularly leiosphaerids, occupying more than 90% of the total counts (n=1 549 ), and a small proportion of metazoan fragments, including Wiwaxia sclerites , brachiopod pieces and cuticles of vermiform animals.