Abstract: On the basis of hydrogeologic characteristics of soil and water environment andvariety of agricultural and aquatic products in Honghu City, this study conducted comprehensive analysis on distribution and characteristics of agricultural andaquatic products. The contents of heavy metals such as Hg, Cd, Pb, As and Cr were used to analyze the distribution features of these elements in agricultural and aquatic products. Meanwhile, the ecological effect of the abnormal heavy-metal concentrations in the root soil and sediments at bottom was discussed using enrichment coefficients and the security of agricultural and aquatic products inthis area has also been evaluated by reference to the allowable maximum values of heavy metals in corresponding foods. The results show that concentrations of heavy metals have imposed ecological influence on this area to some extent. The sequences of the concentrations of heavy metal elements vary with types of agricultural and aquatic products, indicating that different agricultural and aquaticproducts differ in the accumulation of heavy metal elements. The concentrationsof heavy metal elements in rice and crab are generally higher than that in fish,lotus root and lotus seed. Enrichment capability of creatures for chromium andlead is higher than that for arsenic, cadmium and mercury, which might be related to the creatures’ active absorption for heavy metal elements and metabolic factors.Key words:heavy metals; agricultural and aquatic products; security analysis; Honghu City