Abstract: As an important component of belowground ecosystem, soil fauna plays a vital role in regulating soil carbon cycling. However, previous studies provided limited scope for the effects of soil fauna on soil carbon cycling. Based on the analysis of recent literatures, we presented an integrated overview to summarize the effects of soil fauna on litter decomposition, soil carbon stock, the regulation of plants and microorganisms, and soil respiration. To better understand theimpacts of soil fauna on soil carbon cycling, future research should be strengthened in the following aspects: more attention to the lower-latitude areas; the combination of field experiment and lab simulation test should be strengthened as for the research methods; the mechanism such as soil fauna respiration and the effects of fauna on net carbon sequestration should be deepened regarding the research contents; and global hot issues should be combined regarding the research fields.