Spatial distribution of large-sized soil animal communities in a microtopographical range of the Zuojia Nature Reserve was studied from the perspective of ecological series,and relationship of large-sized soil animal communities with soil factors on a small scale was explored taking into account comprehensive effect of soil factors on soil fauna.Results show that in the circumstance that there was no big change in altitude above sea level,vegetation was notable in affect ing large-sized soil fauna. Difference in vegetation was limited between the four habitats,ridge,mesoslope,down-slope,and vale of the sunny slope and shady slope of the studied region,soil factors played an important role in distribution of the soil fauna along the slope in the research region.In a microtopographical range,the changes in soil organic matter,soil water content,pH,total N,and total P tended to be approximate,whereas the change in soil temperature was just the opposite.The effects of the six soil indices on distribution of dominating groups of large-sized soil animals were significant.