Abstract: Wushan Lake is a highly eutrophic, shallow lake connected to the Yangtze River by channel, and a national wetland park. In order to study metazooplankton structural characteristics in the lake stocked densely with silver carp (Hypophthalmichthys molitrix) and bighead carp (Aristichthys nobilis), we conducted a field survey on the metazooplankton community and lake trophic status from September 2017 to August 2018. A total of 61 metazooplankton species (genera) were identified including twenty-four species of Rotifer, twenty-three species of Copepods and fourteen species of Cladocera. Thirteen dominant species including twelve species of Rotifer and one species of Copepods were observed. The percentage of Rotifer of the total abundances was more than 70% in 11 months of the year, while Copepods and the Cladocera abundance accounts for a small percentage of the year. The percentage of Rotifer of the total biomass was more than 80% in 10 months of the year. However, the percentage of Copepods increased after winter-fishing, constituting 20.1%, 79.2% and 51.8% of the total biomass in December, January and February, respectively. Redundancy analyses showed that temperature, Chl a and pH were important factors determining the structures of metazooplankton communities. Our results showed that the metazooplankton were mainly Rotifers and the size of Cladocera and Copepods is small in Wushan Lake.