Abstract: 90.0 mL of surface water sample was taken and its acidity was adjusted to pH 7-9. Water was added to make its volume to 96 mL, 1 mL of 0.6% (mass fraction) NaOCl solution was added and the solution was set aside for 2 h to have the iodine completely oxidized to iodate. 3 mL of HNO₃ acid were then added to made its total volume to 100.0 mL. By this treatment, iodine was transformed to the non-volatile state, and could be determined together with Cu, Pb, Zn, Mn and Fe in the same acidic sample solution by ICP-MS. In the MS analysis, STD mode was used for determination of ²⁰⁷Pb and ¹²⁷I, while KED mode was used for determination of the 4 remainder. Holmium was found to be a suitable internal standard for determination of iodine. Linear relationships between values of signal intensity and mass concentrations of the 6 elements were kept in definite ranges. Detection limits (3s) found by running blank determinations for 12 times, were given as follows:0.096 (I), 0.071 (Cu), 0.062 (Pb), 0.065 (Zn), 0.044 (Mn), 0.19 (Fe) μg·L^-1. Tests for recovery were made by addition of standard solutions of the 6 elements to surface water samples as matrixes, results of recovery found were in the range of 83.2%-116%. Values of RSDs (n=5) found were ranged from 2.4% to 7.3%. A same surface water sample was analysed simultaneously by the present method and the method given in the standards of HJ 778-2015 and GB/T 5750.6-2006, and the results obtained by these methods were in consistency.