Fishes and macro-invertebrates were sampled at two artificial reef sites in August of 2014 using sampling tools (gillnet, cage, trawl) to find out the horizontal boundaries of fish aggregating effects by deployed artificial reefs (AR) as well as sampling efficiency of the applied sampling tools. Fish are the most abundant species for tra mmel nets catch. It took 51.1% of the total gillnets catch; trawls was the most efficient tool for collection of arthropod, followed by fish, accounting 41% and 37.7% respectively of the total catch. Catch of cages did not show any significant difference on species abundance or biomass between different species types along the selected transects. Trawls acted as a better tool on species diversity investigation than trammel nets and cages, while the combination those three tools can draw a most complete picture for local species composition status. For the abundance, biomass and diversity indices, both trammel nets and trawls had the highest density and diversity at core area of sampling AR sites, decreasing slowly along the selected four transects. Based on that, we extracted a distance of 200 m as the effective radiation range of Sanheng AR area while 200-300 m of Dongku AR area. It is concluded firstly that different sampling tools have different advantages on fish and macro-invertebrate evaluation, thus the combination of different tools is needed to reveal the most complete and accurate status of AR aggregating effects. Secondly, the effective range of fish aggregating function by deployed AR could be restricted in a very narrow area less than 1000 m and it is 200 m for this study.