To explore the influence of crab ecological farming on ponds metazoan zooplankton community, crab ponds zooplankton and water source (including Rotifera, Cladocera and Copepoda) of Shanghai Songjiang Maogang district were acquired from April to October at 2013. Zooplankton species composition, biological density, biomass and biodiversity was analyzed. Total of 59 kinds of metazoan zooplankton was detected, including 14 dominant species. The dominant species of Rotifera were Brachionus calyciflorus, Keratella cochlearis, Anuraeopsis fissa, Trichocerca pusill, Polyarthra trigla and Filinia major. The Cladocera dominant species were Diaphanosoma leuchtenbergianum, Diaphanosoma brachyurun, Daphnia pulex, Bosmina longirostris and Chydorus sphaericus. The dominant species of Copepoda were Eucyclops serrulatus, Microcyclops varicans and Mesocyclops leuckarti. The average pond Rotifera biological density was 562.78 ind/L, the average biomass was 0.37 mg/L, the range of Shannon-Wiener diversity index was 1.97-2.36. The average Rotifera biomass density of water source was 388.69 ind/L, the average biomass was 0.25 mg/L, the range of Shannon-Wiener diversity index changes from 1.56 to 2.20. Cladocera average biomass density of ponds was 70.59 ind/L, the average biomass was 4.56 mg/L, the range of Shannon-Wiener diversity index was 1.34 to 2.18. Cladocera average biomass density of water source was 37.92 ind/L, the average biomass was 2.37 mg/L, the range of Shannon-Wiener diversity index was 1.11 to 1.97. Copepoda average biomass density of ponds was 275.00 ind/L, the average biomass was 10.48 mg/L, the range of Shannon-Wiener diversity index changes from 1.25 to 2.26. Copepoda average biomass density of water source was 155.07 ind/L, the average biomass was 7.30 mg/L, the range of Shannon-Wiener diversity index changes from 1.25 to 2.11. In summary, the crab pond zooplankton species, biological density, biomass and biodiversity were higher than the source of water, with the stable community.