Based on the investigation data of zooplankton obtained from four cruises in Jan.Apr.Jul.and Nov.of 2007 in Xiangshan Bay,total 108 species of zooplankton were identified,and the dominant specie was copepods.Sagitta enflata,Euchaeta concinna,and Schamckeria poplesia were selected as the of zooplankton in Xiangshan Bay,and according to their distribution,the ecological communities were classified.The advice of ecological protection in Xiangshan Bay was given.