A method for simultaneous determination of 8 kinds soluble and harmful elements As, Ba, Cd, Cr, Pb, Sb, Se and Hg in metal packaging materials by ICP-MS was developed. The sample pretreatment conditions, such as effects of digestion media, selection of internal standard elements and interference of the method were comprehensively investigated. Under the optimum condition of determination, the detection limits of the method are in the range of 0.03～0.18 μg/L, the relative standard deviations (RSD) are less than 5% and the recoveries are in the range of 87.4％～118.1％. The results proved that this method is simple, accurate and has good reproducibility.