The Le' an River is the most seriously heavy metals polluted area of five rivers into Lake Poyang. Based on a survey of heavy metal pollution status of water, sediment and aquatic organisms during 2003-2004, the results indicate that the content of every component except Cu in the water meet class III criterion for surface water e-valuation. Comparing with environmental quality standard for soils, the average sediment concentration of Pb and Zn in sediment did meet class III criterion except Cu. The indexes of geography accumulation results indicate that Cu pollution has nearly reached a serious stage of pollution, and Pb and Zn only superficially pollute the sediment. Cu, Pb and Zn are enriched differently by aquatic plants in the sampling sites. According to the assessment of enrichment coefficient, the average enrichment coefficient of Cu pollution in aquatic plants was relatively higher than Pb and Zn. Zooplankton, phytoplankton and benthos species had been polluted at different extents, the distribution and amount of which had similarly fluctuated according to the variation of water quality.