| Kuanchuanpu biota is the Early Cambrian microfossil which is characterized as an early animal and plant fossil in the southern region of Shaanxi province.The purpose of research is to find out some new genus and species based on summarizing the system and the feature of all kinds of fossils. This will not only enrich the content of biota, improve our understanding of early biological features, but also supply the evidence for contrast research in the field of Cambrian boundary and the stratum division. In addition, it can provide evidence of major theoretical issues according to the origin and evolution of early earth life.Through measuring the section plane of Kuanchuanpu biota, gathering samples and using the methods of chemical decompose and SEM to research for kinds of fossils, totally there are existing 1000 fossils. In contrast with previous data, it identifies the hyolitha,porifera,protoconulariids,zhijinitids.etc. There have 38 genus and 57 species. The followings are three improvements:1. The establishment of small shelly fossils description for a new genus and a new species. In other words, it establishes Ningqiangconularia gen.nov and Ningqiangconularia pentatus gen.and sp.nov under the cone-shaped stone branch of bone. In this study, the discovery of five-radiation Ningqiangconularia has enriched the variety of protoconulariids. Meanwhile, the paper revises the classified scheme of protoconulariids.2. Given the research of newly discovered bifurcation algae fossil, we conclude the new ideas of different growth pattern between branch growth and top growth.3. Combined with previous research and data in this study, this paper sums up the whole biota of kuanchuanpu. Moreover, it claims that Kuanchuanpu biota is not only represented by skeleton fossils of small hardware, but also filled with the feature of a large number of animal embryos and soft tissue preservation. Altogether, animals and plants constitute the integrity of local biota.
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