Soil fauna in Jujube garden at Wanhuashan, Yan'an City, Shaanxi Province was investigated in March and November 2006.The soil macrofaunas were taken by handsorting in different soil layers. The meso and microfauna were separated by Tullgren method and Baerman method. 463 individuals belonging to 3 phyla, 7 classes and 18 orders were collected, of which Coleptera includes 9 families. The results showed that the dominant group was Collembola, Acarina and Araneae, and the common group was Hymenoptera, Coleoptera (larva), Coleoptera (adult), Lepidoptera (larva), Diptera (larva), Lithobiidae, Lumbricida and Stylommatophora. The composition of groups, distribution of number of individual and diversity index of soil fauna were analyzed. The result indicated that the dominance index of plot No.2 (7 age group of jujube) was less than that of plot No.1 (5 age group of jujube), its diversity index and evenness index were higher than plot No.1. In addition, the total number of individuals and groups of No.2 were more than those of plot No.1.