Abundance biomass comparison curve were applied to analyze the data collected from R/V ‘Hai Fu’ (Fisheries Research Institute) by using bottom trawl in the northern waters off Taiwan between 2008 to 2009. Based on the analysis, the status of fish community in the northern waters off Taiwan was evaluated. There were 216 fish species, belonging to 162 genera, 100 families and 35 orders collected during the surveys. According to the fish abundance rank, 68 species accounted for 99％ of the total abundance of all fish. The average body weights of 145 species, which accounted for 96.11％ in abundance and 56.53% in biomass, were lower than 50 g. Otherwise the average body weights of 27 species were between 51-l00 g, and the average body weights of 44 species were over 101 g. The dominant species included skinnycheek lanternfish (Benthosema pterotum), glowbelly (Acropoma japonicum), red-spot prawn (Metapenaeopsis barbata)、swordtip squid (Uroteuthis (P.) edulis) and bensasi goatfish (Upeneus japonicus). The k-dominance curves of abundance were all above the biomass curves, or the curves intersected (in winter). The W-statistic values were between -0.123 to -0.121 in four seasons (lowest in spring and highest in winter). The present fish community in the northern waters off Taiwan was disturbed severely.