Abstract: Abstract：How the structure and the associated impacting factors of benthic organisms responding to ecological remediation project is a promising work of ecosystem manipulation for wetlands remediation. The annual temporal and spatial patterns of benthic community structure were studied in Scirpus mariqueter wetland on remediated Nanhui Coasts. A total of 30 species of macro benthos were identified in the study. The dominant species appeared in the whole four seasons are Stenothyra glabra, Assiminea, Assimineaviolacea, and Glauconomechinensis Gray. In spring, Glauconomechinensis Gray is the dominant species, and the dominance value is bigger than 0.4. In summer, Assimineasp and Assimineaviolacea Heude are the dominant species with the dominance value bigger 0.1 and 0.2 respectively. By a number of 13 in autumn and winter the dominant species number is higher than that in spring and summer but the dominance value is lower than that in spring and summer, and distributes spatial evenly. There is significant spatial difference for the indices of Shannon-Weiner Index (H’）, species richness (p<0.01) and Pilou’s evenness index (p<0.05), with a highest H’ value of 2.53. According to the Specification for Offshore Environmental Monitoring (HJ442-2008) the habitat quality of Nanhui Coasts are upgraded from very poor and poor levels to general. The canonical correlation analysis (CCA) showed that in spring, summer and autumn the benthic organisms are significantly correlated with vegetation index and elevation, followed by organic carbon and water content, conductivity, and NO-3,while in winter the affecting factor is water content, electrical conductivity and NO-3.