Investigation on the zooplankton of Huizhou West Lake which composed of five small connected lakes were carried out for three times from January to September 2005. 55 species of zooplankton including 38 species of Rotifers, 10 species of Cladocerans and 7 species of Copepods were found. The dominant species included Polyarthra trigla, Filinia longiseta, Brachionus diversicornis, B. forficula, B. angularis, B. calyciflorus, Asplanchna priodonta, Trichocerca capucina, Moina micrura and Mesocyclops thermocyclopoides which mostly were the indicator species of eutrophication. The abundance of zooplankton were between 147.3and 726.10ind./L and the abundance of Rotifer were on predominance. It showed that the distribution of zooplankton were related closely to the water quality combined with correlative analysis of abundance of zooplankton and chemical and physical index of water.