The artificial reefs had been deployed for five years in Haizhou Bay. The resources of fish and macroinvertebrates were investigated in the artificial reefs and adjacent control areas in Haizhou Bay by bottom trawls in 2003,2004,2005 and 2007,with the aim of finding out the changes of community structure of the fish and macroinvertebrates. 96 kinds of fish and macroinvertebrates were found,including 53 kinds of fish,34 kinds of arthropods,7 kinds of Mollusca and 2 kinds of echinoderms,which accounted for 55.21%,35.42%,and 7.29% of the total number respectively. The fish and arthropods accounted for 90.63% of the total number and were the major species in artificial reef sea area. Besides,the results showed that the artificial reefs had obvious improvement on resource protection and restoration. The species composition,biomass,richness and diversity index of the fish and macroinvertebrates were quite different between seasons in artificial reef area and the annual average number of species,biomass,richness and diversity were higher than those of the control area. In addition,ABC curve indicated that the community structure of the fish and macroinvertebrates was unstable without the artificial reefs or with the reefs for one or two years. However,the community structure were stable in spring and autumn of the 4th year with the artificial reefs in the ecosystem.