本文研究了大连湾、锦州湾表层沉积物中ＢＨＣ、ＤＤＴ和ＰＣＢ的分布特征。结果表明，大连湾沿岸入海排污口附近ＢＨＣ、ＤＤＴ和ＰＣＢ含量较高，其来源主要是沿岸工农业污水。锦州湾五里河口附近ＢＨＣ、ＤＤＴ含量较高，主要是锦州地区农业和卫生事业用药随河流流入所致。３种污染物在两湾的分布特征是：总ＢＨＣ和总ＤＤＴ锦州湾高于大连湾；ＰＣＢ大连湾高于锦州湾。其含量均落在世界海洋近岸表层沉积物含量范围内，属中度污染。 In this paper, the distribution characteristics of BHC, DDT and PCB in surface sediments of Dalian Bay and Jinzhou Bay were studied. The results show that the content of BHC, DDT and PCB near the sewage outfall in the coast of Dalian Bay is high, and the main sources are the industrial and agricultural sewage along the coast. The BHC and DDT contents near Wulihe estuary in Jinzhou Bay were high, mainly due to the inflow of medicines for agriculture and health in Jinzhou. The distribution characteristics of the three pollutants in the two bays are: the total BHC and total DDT are higher in Jinzhou Bay than in Dalian Bay; PCB Dalian Bay is higher than Jinzhou Bay. Its content falls within the scope of the world’s marine surface sediment, which is a moderate pollution.