Character and its change of functional guilds of fish community in Laizhou Bay was studied based on trawl survey data from bottom trawl surveys in May, August, October and December 2011. A total of 49 species were identified, all of them were Osteichathyes species. It can be divided into seven guilds based on the feeding habit: planktivores, planktivores/benthivores, benthivores, benthivores/piscivores, piscivores, omnivores and detritivores. The most species-rich guild was benthivores (14 species) and benthivores/piscivores (12 species). Detritivores (32.8%), planktivores (31.6%) and benthivores/piscivores (25.0%) accounted for about 90 percentages of the total catch. The seasonal trends of diversity of functional guilds (H_FD) were same as that of diversity of species (H_S). Exponential equation fitted perfectly between H_FD and H_S. The average trophic level of every guild was all between 3 and 4. Compared with the results conducted in 1980s and 1990s, the change was: 1.The proportion of detritivores increase and the average trophic level also raise; 2.The proportion of piscivores decline and average trophic level also down.