Here,the distribution characteristics of mercury,lead,zinc in the sediment of three rivers of Huludao City,China contaminated by different pollution sources were investigated by enrichments factors using Fe as a normalizer,the ratio of enrichment factors(R) which was used firstly and correlation matrices.The Hg,Pb,Zn average contents in sediment of Wuli River which was contaminated by chlor-alkali were 663,3.21,5.51 times as high as the regional sediment background value,respectively.Those of Cishan River which was contaminated by zinc smelting plant were 1 889,64.89,124 times as high as the regional sediment background value,respectively.Those of Lianshan River which was contaminated by contaminated soil were 11.43,3.50,3.88 times as high as the regional sediment background value,respectively.The source of Hg in sediment of Wuli River is different from Pb,Zn,and the source of Hg,Pb,Zn in sediment of Cishan River is the same one.