The purpose of this research was estimated CPUE index for Metapenaeus affinis in Bushehr coastal waters in 2011. Sampling was carried out by R/V SHANAK (outrigger trawler with 26m length, 7.4m wide and 600 hp) equipped with two bottom trawl nets(were made up Polyamide) with a 31m head rope and a 40mm mesh size in the cod-end and 50mm in the panel. Samples were collected at a total of 44 trawl station selected following a stratified random procedure. The minimal, maximum and mean CPUE (±STD) for M. affinis obtained 0, 2000 and 200.8±471.9 g/h.