In order to study the dynamic change of soil animal in desertification control rock。The writer has surveyed the rocky desertification area’s soil fauna’s distribution of Yachi of Bijie, Hongfeng Lake of Qingzhen and Huanjiang Area of Zhenfeng-Guanling, and function study of soil animals on the ecological environment restoration in rocky desertification were summarized. The results found that the main functional groups of soil fauna were omnivorous and phytogyagous in the three rocky desertification areas. And predatory and corrosive functional groups were limited. As the latitude increase, the Shannon-wiener diversity index and Margulef index increase as well. But the Pielou and Simpon indexes did not have this response; the numbers of species and individual decrease as the deepen of rocky desertification degree or soil depth. Soil fanua’s surface aggregation phenomenon was obvious; Been effected by severe drought, the quantity of soil fanua changed a lot annually; With strong anti-jamming ability and drought resistance, Acarina and Collembola play an important role in litter’s composition. So these two species could be used for soil improvement.