Abstract: Soil nematode is an important assessment index in evaluating soil quality, particularly in the post-remediation evaluation of contaminated soil. To study the ecological effects of remediation of cadmium contamination, we evaluated the biological diversity, community structure and ecological indices of soil nematodes in Cd contaminated rice fields, employing metal passivator, passivator+ water, and foliar fertilizer in Changsha, Hunan Province. The results showed as following: 1) The (Shannon-Wiener index, Simposon index, and Pilou evenness index were not significantly different in fields under the three remediation methods, indicating that these remediation methods of soil heavy metals had no impacts on soil nematodes diversity in rice fields. 2) The community constructure, MI, PPI and MI25, of soil nematodes were significantly different in fields under the three remediation methods, which was related with sampling time. 3) The ecological function indices, EI, SI, NCR and WI, of soil nematodes were not significantly different in the three remediation methods.  The community dynamics of soil nematodes reflects the remediation effects of Cd-contaminated soil, and soil nematode could be a crucial biological indicator of pollution remediation in fields.