Resources multiplication was evaluated preliminarily based on 3 surveys carried out in March of 2004, May of 2007 and August of 2010 respectively. The results show that: after the development of artificial reef (ARs) in reef area, its species number was 1.50 times in 2007 and 2.15 times in 2010 of the number in background survey. The species numbers in control area were 1.27 times in 2007 and 2.00 times in 2010 of the number in background survey. Resources density in ARs area became 2.13 times in 2007 and 3.00 times in 2010 as many as in 2004. Resources densities in control area were 0.46 times in 2007 and 1.96 times in 2010 of density in 2004. Pileou uniformity index, ShannonWinener diversity index and Margalef species richness index increased gradually after ARs were deployed in both ARs area and control area. Fish has become the dominant species in both ARs area and control area after ARs were deployed. Some kinds of economic species which did not appear in background survey became normal species in tracking surveys. It is concluded from those results that the fishery productively in ARs area has improved a lot, and the community structure has became multiplication and stabilization. The resources multiplication effect and economic effect of ARs in Wushi Leizhou have been proved to be efficacious.