Ship propeller jet in river may cause the suspension of sediment and lead to the release of heavy metal elements into water.The effects of different propeller jet conditions on sediment suspension and release of heavy metal pollutant-Pbinto water were discussed through physical simulation test.Three diameters and rotating speeds of propeller were set-up in the test.Water samples were collected at a place of 2 times of the propeller diameter behind the propeller to analyze the concentration of suspended solid.Also,the vertical distribution of Pbin overlying water and sediment was obtained in situ by using the technique of diffusive gradients in thin films.The test results show that the larger the propeller diameter,the higher the rotor speed,and the smaller the distance between the blade tip and the riverbed surface,the bigger the peak value of the suspended matter concentration in the overlying water when turning the propeller in still water.Meanwhile,the vertical concentration and release amount of Pb in and from the surface sediment (8 cm below the interface) increase with the propeller diameter and rotating speed increasing.