Thecontents of heavy metals in water and sediment along Mangyung River was carried out from October 1989 to September 1990. The pollution levels of metals such as Cd, Pb, Cu, Mn and Zn were remarkably indicated high values at site (B). The results obtained are as follows; 1) In water, concentration of Cd, Pb, Cu, Mn and Zn are respectively N.D-15.39 ppb, N.D-21.07 ppb, N.D-28.48 ppb, N.D-152.40 ppb and N.D -86.37 ppb. 2) In sediment, concentration of Cd, Pb, Cu, Mn and Zn are respectively 0.11∼2.27 ppm, 5.48∼64.52 ppm, 4.48∼125.54 ppm, 176.58∼452.83 ppm and 24.18∼422.73 ppm.